diff --git a/src/sprintf.c b/src/sprintf.c
index 0e8ac830f..750b17d25 100644
--- a/src/sprintf.c
+++ b/src/sprintf.c
@@ -17,6 +17,10 @@
 #include <math.h>
 #include <ctype.h>
 
+#ifdef _MSC_VER
+#include <float.h>
+#endif
+
 #ifdef HAVE_IEEEFP_H
 #include <ieeefp.h>
 #endif