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-rw-r--r--Src/Modules/system.mdd3
1 files changed, 2 insertions, 1 deletions
diff --git a/Src/Modules/system.mdd b/Src/Modules/system.mdd
index 51e96a46f..556f9f2ac 100644
--- a/Src/Modules/system.mdd
+++ b/Src/Modules/system.mdd
@@ -11,8 +11,9 @@ objects="system.o errnames.o"
 headers="errcount.h"
 
 :<<\Make
+# careful: ERRNO_H may contain a list
 errnames.c: errnames1.awk errnames2.awk $(dir_top)/config.h @ERRNO_H@
-	   if [ x@ERRNO_H@ = x ]; then \
+	   if [ x"@ERRNO_H@" = x ]; then \
 		touch errtmp.out; \
 	   else \
 		$(AWK) -f $(sdir)/errnames1.awk @ERRNO_H@ >errtmp.c; \