diff --git a/src/stb-image-source.cc b/src/stb-image-source.cc
index 764b997..88e2ca5 100644
--- a/src/stb-image-source.cc
+++ b/src/stb-image-source.cc
@@ -111,7 +111,10 @@ bool STBImageSource::LoadAndScale(const DisplayOptions &options,
         int w, h;
         uint8_t *data = stbi__load_and_postprocess_8bit(
             &context, &w, &h, &channels, kDesiredChannels);
-        if (!data) return false;
+        if (!data) {
+            fclose(img_file);
+            return false;
+        }
 
         orig_width_  = w;
         orig_height_ = h;
@@ -130,6 +133,8 @@ bool STBImageSource::LoadAndScale(const DisplayOptions &options,
                       ? (int)frames_.size()
                       : std::min(frame_count, (int)frames_.size());
 
+    fclose(img_file);
+
     return !frames_.empty();
 }