1 files changed, 5 insertions, 0 deletions
diff --git a/ui/text_import.c b/ui/text_import.c
index 7b40c49a50..d02b1bdcd6 100644
--- a/ui/text_import.c
+++ b/ui/text_import.c
@@ -319,6 +319,11 @@ parse_num (const char *str, int offset)
     unsigned long num;
     char *c;
 
+    if (str == NULL) {
+        fprintf(stderr, "FATAL ERROR: str is NULL\n");
+        exit(1);
+    }
+
     num = strtoul(str, &c, offset ? offset_base : 16);
     if (c==str) {
         fprintf(stderr, "FATAL ERROR: Bad hex number? [%s]\n", str);