diff --git a/nfq/helpers.c b/nfq/helpers.c
index 03f130c..2e4727d 100644
--- a/nfq/helpers.c
+++ b/nfq/helpers.c
@@ -303,7 +303,11 @@ time_t file_mod_time(const char *filename)
 bool file_mod_signature(const char *filename, file_mod_sig *ms)
 {
 	struct stat st;
-	if (stat(filename,&st)==-1) return false;
+	if (stat(filename,&st)==-1)
+	{
+		FILE_MOD_RESET(ms);
+		return false;
+	}
 	ms->mod_time=st.st_mtime;
 	ms->size=st.st_size;
 	return true;
diff --git a/tpws/helpers.c b/tpws/helpers.c
index b4f4ba3..7db6aac 100644
--- a/tpws/helpers.c
+++ b/tpws/helpers.c
@@ -317,7 +317,11 @@ time_t file_mod_time(const char *filename)
 bool file_mod_signature(const char *filename, file_mod_sig *ms)
 {
 	struct stat st;
-	if (stat(filename,&st)==-1) return false;
+	if (stat(filename,&st)==-1)
+	{
+		FILE_MOD_RESET(ms);
+		return false;
+	}
 	ms->mod_time=st.st_mtime;
 	ms->size=st.st_size;
 	return true;