diff --git a/Makefile.windows b/Makefile.windows
index 036f12d..5a9df7d 100644
--- a/Makefile.windows
+++ b/Makefile.windows
@@ -40,6 +40,7 @@ FFTW_BUILD_F := $(FFTW_INST)/build-float
 
 FFTW_CONF_COMMON = \
   --host=$(MINGW_PREFIX) \
+  CC=$(CC) \
   --prefix=$(FFTW_INST) \
   --enable-shared \
   --disable-static \