diff --git a/src/build/build_options.c b/src/build/build_options.c
index eaed8c57f..db27cdc0b 100644
--- a/src/build/build_options.c
+++ b/src/build/build_options.c
@@ -8,6 +8,9 @@
 #include <assert.h>
 #ifndef _MSC_VER
 #include <unistd.h>
+#else
+#define strncasecmp _strnicmp
+#define strcasecmp _stricmp
 #endif
 #include <stdbool.h>
 #include <string.h>