diff --git a/rules/ppc.mk b/rules/ppc.mk
index 8c218a5..76447fa 100644
--- a/rules/ppc.mk
+++ b/rules/ppc.mk
@@ -1,5 +1,5 @@
 LIBPATHS  := -L$(WUT_ROOT)/lib
-CFLAGS    := -I$(WUT_ROOT)/include -fno-builtin -ffreestanding -fno-jump-tables
+CFLAGS    := -I$(WUT_ROOT)/include -fno-builtin -ffreestanding -fno-jump-tables  -std=c11
 CXXFLAGS  := $(CFLAGS)
 LDFLAGS   := -nostdlib -nostartfiles