diff --git a/Source/Core/Common/Src/ColorUtil.cpp b/Source/Core/Common/Src/ColorUtil.cpp
index f338fb3f47..b23da3a05b 100644
--- a/Source/Core/Common/Src/ColorUtil.cpp
+++ b/Source/Core/Common/Src/ColorUtil.cpp
@@ -40,4 +40,41 @@ u32 Decode5A3(u16 val)
 	return (a << 24) | (r << 16) | (g << 8) | b;
 }
 
+void decode5A3image(u32* dst, u16* src, int width, int height)
+{
+	for (int y = 0; y < height; y += 4)
+	{
+		for (int x = 0; x < width; x += 4)
+		{
+			for (int iy = 0; iy < 4; iy++, src += 4)
+			{
+				for (int ix = 0; ix < 4; ix++)
+				{
+					u32 RGBA = Decode5A3(Common::swap16(src[ix]));
+					dst[(y + iy) * width + (x + ix)] = RGBA;
+				}
+			}
+		}
+	}
+}
+
+void decodeCI8image(u32* dst, u8* src, u16* pal, int width, int height)
+{
+	for (int y = 0; y < height; y += 4)
+	{
+		for (int x = 0; x < width; x += 8)
+		{
+			for (int iy = 0; iy < 4; iy++, src += 8)
+			{
+				u32 *tdst = dst+(y+iy)*width+x;
+				for (int ix = 0; ix < 8; ix++)
+				{
+					// huh, this seems wrong. CI8, not 5A3, no?
+					tdst[ix] = ColorUtil::Decode5A3(Common::swap16(pal[src[ix]]));
+				}
+			}
+		}
+	}
+}
+
 }  // namespace
diff --git a/Source/Core/Common/Src/ColorUtil.h b/Source/Core/Common/Src/ColorUtil.h
index 8b666f1f5c..010d8b1a5c 100644
--- a/Source/Core/Common/Src/ColorUtil.h
+++ b/Source/Core/Common/Src/ColorUtil.h
@@ -8,7 +8,8 @@
 namespace ColorUtil
 {
 
-u32 Decode5A3(u16 val);
+void decode5A3image(u32* dst, u16* src, int width, int height);
+void decodeCI8image(u32* dst, u8* src, u16* pal, int width, int height);
 
 }  // namespace
 
diff --git a/Source/Core/Core/Src/HW/GCMemcard.cpp b/Source/Core/Core/Src/HW/GCMemcard.cpp
index b4aa9993de..67102bbc8c 100644
--- a/Source/Core/Core/Src/HW/GCMemcard.cpp
+++ b/Source/Core/Core/Src/HW/GCMemcard.cpp
@@ -11,43 +11,6 @@ static void ByteSwap(u8 *valueA, u8 *valueB)
 	*valueB = tmp;
 }
 
-void decode5A3image(u32* dst, u16* src, int width, int height)
-{
-	for (int y = 0; y < height; y += 4)
-	{
-		for (int x = 0; x < width; x += 4)
-		{
-			for (int iy = 0; iy < 4; iy++, src += 4)
-			{
-				for (int ix = 0; ix < 4; ix++)
-				{
-					u32 RGBA = ColorUtil::Decode5A3(Common::swap16(src[ix]));
-					dst[(y + iy) * width + (x + ix)] = RGBA;
-				}
-			}
-		}
-	}
-}
-
-void decodeCI8image(u32* dst, u8* src, u16* pal, int width, int height)
-{
-	for (int y = 0; y < height; y += 4)
-	{
-		for (int x = 0; x < width; x += 8)
-		{
-			for (int iy = 0; iy < 4; iy++, src += 8)
-			{
-				u32 *tdst = dst+(y+iy)*width+x;
-				for (int ix = 0; ix < 8; ix++)
-				{
-					// huh, this seems wrong. CI8, not 5A3, no?
-					tdst[ix] = ColorUtil::Decode5A3(Common::swap16(pal[src[ix]]));
-				}
-			}
-		}
-	}
-}
-
 GCMemcard::GCMemcard(const char *filename, bool forceCreation, bool sjis)
 	: m_valid(false)
 	, m_fileName(filename)
@@ -1083,13 +1046,13 @@ bool GCMemcard::ReadBannerRGBA8(u8 index, u32* buffer) const
 		u8  *pxdata  = (u8* )(mc_data_blocks[DataBlock].block + DataOffset);
 		u16 *paldata = (u16*)(mc_data_blocks[DataBlock].block + DataOffset + pixels);
 
-		decodeCI8image(buffer, pxdata, paldata, 96, 32);
+		ColorUtil::decodeCI8image(buffer, pxdata, paldata, 96, 32);
 	}
 	else
 	{
 		u16 *pxdata = (u16*)(mc_data_blocks[DataBlock].block + DataOffset);
 
-		decode5A3image(buffer, pxdata, 96, 32);
+		ColorUtil::decode5A3image(buffer, pxdata, 96, 32);
 	}
 	return true;
 }
@@ -1185,16 +1148,16 @@ u32 GCMemcard::ReadAnimRGBA8(u8 index, u32* buffer, u8 *delays) const
 			switch (fmts[i])
 			{
 			case CI8SHARED: // CI8 with shared palette
-				decodeCI8image(buffer,data[i],sharedPal,32,32);
+				ColorUtil::decodeCI8image(buffer,data[i],sharedPal,32,32);
 				buffer += 32*32;
 				break;
 			case RGB5A3: // RGB5A3
-				decode5A3image(buffer, (u16*)(data[i]), 32, 32);
+				ColorUtil::decode5A3image(buffer, (u16*)(data[i]), 32, 32);
 				buffer += 32*32;
 				break;
 			case CI8: // CI8 with own palette
 				u16 *paldata = (u16*)(data[i] + 32*32);
-				decodeCI8image(buffer, data[i], paldata, 32, 32);
+				ColorUtil::decodeCI8image(buffer, data[i], paldata, 32, 32);
 				buffer += 32*32;
 				break;
 			}
@@ -1211,15 +1174,15 @@ u32 GCMemcard::ReadAnimRGBA8(u8 index, u32* buffer, u8 *delays) const
 					switch (fmts[j])
 					{
 					case CI8SHARED: // CI8 with shared palette
-						decodeCI8image(buffer,data[j],sharedPal,32,32);
+						ColorUtil::decodeCI8image(buffer,data[j],sharedPal,32,32);
 						break;
 					case RGB5A3: // RGB5A3
-						decode5A3image(buffer, (u16*)(data[j]), 32, 32);
+						ColorUtil::decode5A3image(buffer, (u16*)(data[j]), 32, 32);
 						buffer += 32*32;
 						break;
 					case CI8: // CI8 with own palette
 						u16 *paldata = (u16*)(data[j] + 32*32);
-						decodeCI8image(buffer, data[j], paldata, 32, 32);
+						ColorUtil::decodeCI8image(buffer, data[j], paldata, 32, 32);
 						buffer += 32*32;
 						break;
 					}
diff --git a/Source/Core/DiscIO/Src/BannerLoaderGC.cpp b/Source/Core/DiscIO/Src/BannerLoaderGC.cpp
index a4f07c5fdc..c03af4f86a 100644
--- a/Source/Core/DiscIO/Src/BannerLoaderGC.cpp
+++ b/Source/Core/DiscIO/Src/BannerLoaderGC.cpp
@@ -55,7 +55,7 @@ std::vector<u32> CBannerLoaderGC::GetBanner(int* pWidth, int* pHeight)
 	std::vector<u32> Buffer;
 	Buffer.resize(DVD_BANNER_WIDTH * DVD_BANNER_HEIGHT);
 	auto const pBanner = (DVDBanner*)m_pBannerFile;
-	decode5A3image(&Buffer[0], pBanner->image, DVD_BANNER_WIDTH, DVD_BANNER_HEIGHT);
+	ColorUtil::decode5A3image(&Buffer[0], pBanner->image, DVD_BANNER_WIDTH, DVD_BANNER_HEIGHT);
 	*pWidth = DVD_BANNER_WIDTH;
 	*pHeight = DVD_BANNER_HEIGHT;
 	return Buffer;
@@ -163,25 +163,6 @@ std::vector<std::string> CBannerLoaderGC::GetDescriptions()
 	return descriptions;
 }
 
-
-void CBannerLoaderGC::decode5A3image(u32* dst, u16* src, int width, int height)
-{
-	for (int y = 0; y < height; y += 4)
-	{
-		for (int x = 0; x < width; x += 4)
-		{
-			for (int iy = 0; iy < 4; iy++, src += 4)
-			{
-				for (int ix = 0; ix < 4; ix++)
-				{
-					u32 RGBA = ColorUtil::Decode5A3(Common::swap16(src[ix]));
-					dst[(y + iy) * width + (x + ix)] = RGBA;
-				}
-			}
-		}
-	}
-}
-
 CBannerLoaderGC::BANNER_TYPE CBannerLoaderGC::getBannerType()
 {
 	u32 bannerSignature = *(u32*)m_pBannerFile;
diff --git a/Source/Core/DiscIO/Src/BannerLoaderGC.h b/Source/Core/DiscIO/Src/BannerLoaderGC.h
index e18a2fee82..133ee91978 100644
--- a/Source/Core/DiscIO/Src/BannerLoaderGC.h
+++ b/Source/Core/DiscIO/Src/BannerLoaderGC.h
@@ -75,9 +75,8 @@ class CBannerLoaderGC
 		bool m_IsValid;
 		BANNER_TYPE m_BNRType;
 
-		void decode5A3image(u32* dst, u16* src, int width, int height);
 		BANNER_TYPE getBannerType();
-		
+
 		DiscIO::IVolume::ECountry const m_country;
 };
 
diff --git a/Source/Core/DiscIO/Src/BannerLoaderWii.cpp b/Source/Core/DiscIO/Src/BannerLoaderWii.cpp
index a3b7f56172..777d436df2 100644
--- a/Source/Core/DiscIO/Src/BannerLoaderWii.cpp
+++ b/Source/Core/DiscIO/Src/BannerLoaderWii.cpp
@@ -103,7 +103,7 @@ std::vector<u32> CBannerLoaderWii::GetBanner(int* pWidth, int* pHeight)
 	SWiiBanner* pBanner = (SWiiBanner*)m_pBannerFile;
 	std::vector<u32> Buffer;
 	Buffer.resize(192 * 64);
-	decode5A3image(&Buffer[0], (u16*)pBanner->m_BannerTexture, 192, 64);
+	ColorUtil::decode5A3image(&Buffer[0], (u16*)pBanner->m_BannerTexture, 192, 64);
 	*pWidth = 192;
 	*pHeight = 64;
 	return Buffer;
@@ -153,22 +153,4 @@ std::vector<std::string> CBannerLoaderWii::GetDescriptions()
 	return result;
 }
 
-void CBannerLoaderWii::decode5A3image(u32* dst, u16* src, int width, int height)
-{
-	for (int y = 0; y < height; y += 4)
-	{
-		for (int x = 0; x < width; x += 4)
-		{
-			for (int iy = 0; iy < 4; iy++, src += 4)
-			{
-				for (int ix = 0; ix < 4; ix++)
-				{
-					u32 RGBA = ColorUtil::Decode5A3(Common::swap16(src[ix]));
-					dst[(y + iy) * width + (x + ix)] = RGBA;
-				}
-			}
-		}
-	}
-}
-
 } // namespace
diff --git a/Source/Core/DiscIO/Src/BannerLoaderWii.h b/Source/Core/DiscIO/Src/BannerLoaderWii.h
index 455213cbf9..84e106d1ba 100644
--- a/Source/Core/DiscIO/Src/BannerLoaderWii.h
+++ b/Source/Core/DiscIO/Src/BannerLoaderWii.h
@@ -59,8 +59,6 @@ class CBannerLoaderWii
 
 		bool m_IsValid;
 
-		void decode5A3image(u32* dst, u16* src, int width, int height);
-
 		bool GetStringFromComments(const CommentIndex index, std::string& s);
 };
 } // namespace