diff --git a/platforms/app/main.c b/platforms/app/main.c
index 7558721..8aa2e12 100644
--- a/platforms/app/main.c
+++ b/platforms/app/main.c
@@ -24,11 +24,17 @@ M3Result repl_load  (IM3Runtime runtime, const char* fn)
     fsize = ftell(f);
     fseek (f, 0, SEEK_SET);
 
-    if (fsize > 10*1024*1024) {
+    if (fsize < 8) {
+        return "file is too small";
+    } else if (fsize > 10*1024*1024) {
         return "file too big";
     }
 
     wasm = (u8*) malloc(fsize);
+    if (!wasm) {
+        return "cannot allocate memory for wasm binary";
+    }
+
     fread (wasm, 1, fsize, f);
     fclose (f);
 
diff --git a/source/m3_api_wasi.c b/source/m3_api_wasi.c
index 43a051b..6e7dd0c 100644
--- a/source/m3_api_wasi.c
+++ b/source/m3_api_wasi.c
@@ -360,7 +360,7 @@ m3ApiRawFunction(m3_wasi_unstable_path_open)
     memcpy (host_path, path, path_len);
     host_path [path_len] = '\0'; // NULL terminator
 
-    printf ("== path_open: %s\n", host_path);
+    //printf ("== path_open: %s\n", host_path);
 
 #ifdef _WIN32
     // TODO: This all needs a proper implementation