diff --git a/src/process_pipeline.c b/src/process_pipeline.c
index 50a6334..a913129 100644
--- a/src/process_pipeline.c
+++ b/src/process_pipeline.c
@@ -1262,21 +1262,27 @@ static void
 post_process_finished(GSubprocess *proc, GAsyncResult *res, GdkTexture *thumb)
 {
         char *stdout;
+	char *path;
         g_subprocess_communicate_utf8_finish(proc, res, &stdout, NULL, NULL);
 
         // The last line contains the file name
         int end = strlen(stdout);
-        // Skip the newline at the end
-        stdout[--end] = '\0';
 
-        char *path = path = stdout + end - 1;
-        do {
-                if (*path == '\n') {
-                        path++;
-                        break;
-                }
-                --path;
-        } while (path > stdout);
+	if (end > 0) {
+		// Skip the newline at the end
+		stdout[--end] = '\0';
+
+		path = stdout + end - 1;
+		do {
+			if (*path == '\n') {
+				path++;
+				break;
+			}
+			--path;
+		} while (path > stdout);
+	} else {
+		path = stdout;
+	}
 
         mp_main_capture_completed(thumb, path);
 }