diff --git a/src/Makefile b/src/Makefile
index 317d1337..8752ea90 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -49,6 +49,7 @@ ifneq (,$(findstring MINGW, $(UNAME)))
 LIBXLSXWRITER_SO = libxlsxwriter.dll
 FPIC =
 CFLAGS += -Wno-long-long
+CC = gcc
 endif
 
 # Change make options on Cygwin.
diff --git a/third_party/minizip/Makefile b/third_party/minizip/Makefile
index 0454024d..dfabd173 100644
--- a/third_party/minizip/Makefile
+++ b/third_party/minizip/Makefile
@@ -17,6 +17,7 @@ CFLAGS = -O3 -DNOCRYPT -DNOUNCRYPT
 # Change make options on MinGW.
 ifneq (,$(findstring MINGW, $(UNAME)))
 FPIC =
+CC = gcc
 endif
 
 # Change make options on Cygwin.