diff --git a/src/bin/m4/lib/config.h b/src/bin/m4/lib/config.h
index e5b00180b2..33a1704f20 100644
--- a/src/bin/m4/lib/config.h
+++ b/src/bin/m4/lib/config.h
@@ -441,7 +441,7 @@
 #define STDC_HEADERS 1
 
 /* Define to 1 if strerror_r returns char *. */
-#define STRERROR_R_CHAR_P 1
+/* #undef STRERROR_R_CHAR_P */
 
 /* Define to 1 if using stack overflow detection */
 // #define USE_STACKOVF 1