diff --git a/sh.h b/sh.h
index 2c3de4e..f5a4ac1 100644
--- a/sh.h
+++ b/sh.h
@@ -175,7 +175,7 @@
 #endif
 
 #ifdef EXTERN
-__RCSID("$MirOS: src/bin/mksh/sh.h,v 1.758 2016/01/21 18:24:43 tg Exp $");
+__RCSID("$MirOS: src/bin/mksh/sh.h,v 1.759 2016/01/21 19:38:09 tg Exp $");
 #endif
 #define MKSH_VERSION "R52 2016/01/21"
 
@@ -867,7 +867,12 @@ EXTERN const char T_function[] E_INIT(" function");
 EXTERN const char T_funny_command[] E_INIT("funny $() command");
 #define Tcommand	(T_funny_command + 10)	/* "command" */
 EXTERN const char Tfg_badsubst[] E_INIT("fileglob: bad substitution");
+#if defined(__GNUC__)
+/* trust this to have string pooling; -Wformat bitches otherwise */
+#define Tbadsubst	"bad substitution"
+#else
 #define Tbadsubst	(Tfg_badsubst + 10)	/* "bad substitution" */
+#endif
 EXTERN const char Tmissinghere[] E_INIT("missing here document");
 #define Theredoc	(Tmissinghere + 8)	/* "here document" */
 EXTERN const char TC_LEX1[] E_INIT("|&;<>() \t\n");