diff --git a/external_tester/maestro_cli_test.py b/external_tester/maestro_cli_test.py
index 81f9ecce..51d4244b 100644
--- a/external_tester/maestro_cli_test.py
+++ b/external_tester/maestro_cli_test.py
@@ -117,7 +117,7 @@ def cliGenerateAlgorithmFromMultiModel():
     with open(multiModelPath, "w+") as jsonFile:
         json.dump(multiModel, jsonFile)
         
-    print("Multi model file content: " + multiModel)
+    print("Multi model file content: " + str(multiModel))
     
     cmd = "java -jar {0} sigver generate-algorithm {1} -output {2}".format(path, multiModelPath, temporary)
     func = lambda: print("Succesfully generated algorithm from multi model") if(os.path.exists(os.path.join(temporary, "algorithm.conf"))) else lambda: (Exception("Algorithm was not returned"))