diff --git a/test/main.c b/test/main.c
index 6bf10b0..62ca3ac 100644
--- a/test/main.c
+++ b/test/main.c
@@ -55,7 +55,7 @@ void write(const char *filename,
 bool unpackpld(const char *filedata,
                unsigned int filesize,
                const char *filename) {
-    if (filedata == NULL || filesize <= 0) {
+    if (filedata == NULL || filesize <= 0 || filename == NULL) {
         return false;
     } 
     struct PldHeader h;
@@ -80,7 +80,7 @@ void exporttextures(const char *filedata,
     struct Texture *t     = NULL;
     struct TextureBatchDescriptor *d = NULL;
     char * fmt            = NULL;
-    if (filename == NULL || filesize == 0) {
+    if (filedata == NULL || filesize == 0) {
         return;
     }
     p = (struct TexturePack*)filedata;