diff --git a/CHANGES/203.bugfix b/CHANGES/203.bugfix
new file mode 100644
index 0000000000..2fadb5fac2
--- /dev/null
+++ b/CHANGES/203.bugfix
@@ -0,0 +1 @@
+Fix error in error msg when importing invalid filenames
diff --git a/galaxy_ng/app/api/utils.py b/galaxy_ng/app/api/utils.py
index aef5f78384..08c70b1c80 100644
--- a/galaxy_ng/app/api/utils.py
+++ b/galaxy_ng/app/api/utils.py
@@ -34,7 +34,7 @@ def parse_collection_filename(filename):
     match = FILENAME_REGEXP.match(filename)
 
     if not match:
-        msg = "Invalid filename {filename}. Expected format: {namespace}-{name}-{version}.tar.gz"
+        msg = "Invalid filename {filename}. Expected format: namespace-name-version.tar.gz"
         raise ValueError(msg.format(filename=filename))
 
     namespace, name, version = match.groups()