diff --git a/src/tools/dumpnbt.cpp b/src/tools/dumpnbt.cpp
index 34a445c..d28f098 100644
--- a/src/tools/dumpnbt.cpp
+++ b/src/tools/dumpnbt.cpp
@@ -86,12 +86,15 @@ int main(int argc, char* argv[]) {
     }
     fileStream.close();
 
-    bool validData = NBT::validateRawNBTData(data, fileSize);
-    if (validData) {
+    bool isValidData = NBT::validateRawNBTData(data, fileSize);
+    if (isValidData) {
         std::cerr << "Valid data." << std::endl;
     } else {
         std::cerr << "Invalid data." << std::endl;
+        return EXIT_RUNTIME;
     }
 
+    //TODO: print things here
+
     return EXIT_SUCCESS;
 }