diff --git a/config.mk b/config.mk
index 0929b4a..5dacc6c 100644
--- a/config.mk
+++ b/config.mk
@@ -28,4 +28,4 @@ CFLAGS   = -std=c99 -pedantic -Wall -Os $(INCS) $(CPPFLAGS)
 LDFLAGS  = $(LIBS)
 
 # compiler and linker
-CC = cc
+CC = clang