diff --git a/gcc/enquire.c b/gcc/enquire.c
index 763b1a44c9d3..070bb80e5944 100644
--- a/gcc/enquire.c
+++ b/gcc/enquire.c
@@ -387,6 +387,11 @@
 #endif /* STDC */
 
 /* include files */
+/* Stdio.h might include limits.h, and limits.h might include float.h, and
+   float.h is probably the float.h put together by the gcc makefile to
+   cause errors.  We use our special define to assure float.h that we don't
+   really need it.  */
+#define __GCC_FLOAT_NOT_NEEDED   
 #include <stdio.h>
 
 #ifdef STDC