diff --git a/main.c b/main.c
index e73cd8d..e53495c 100644
--- a/main.c
+++ b/main.c
@@ -232,6 +232,9 @@ main(int argc, char *argv[])
 			/* treat +thing as an option for C++ */
 			if (endmarker && **argv == '+')
 				continue;
+			if (fp >= filelist + MAXFILES) {
+			    fatalerr("Too many source files. Limit are %i files.\n", MAXFILES);
+			}
 			*fp++ = argv[0];
 			continue;
 		}