diff --git a/build/Linux-x86_64-GCC/Makefile b/build/Linux-x86_64-GCC/Makefile
index 72f251a..c3efaa2 100644
--- a/build/Linux-x86_64-GCC/Makefile
+++ b/build/Linux-x86_64-GCC/Makefile
@@ -44,7 +44,7 @@ SOFTFLOAT_OPTS ?= \
 DELETE = rm -f
 C_INCLUDES = -I. -I$(SOURCE_DIR)/$(SPECIALIZE_TYPE) -I$(SOURCE_DIR)/include
 COMPILE_C = \
-  gcc -c -Werror-implicit-function-declaration -DSOFTFLOAT_FAST_INT64 \
+  emcc -c -Werror-implicit-function-declaration -DSOFTFLOAT_FAST_INT64 \
     $(SOFTFLOAT_OPTS) $(C_INCLUDES) -O2 -o $@
 MAKELIB = ar crs $@