diff --git a/fdroidserver/build.py b/fdroidserver/build.py
index 718ad079..755adc1e 100644
--- a/fdroidserver/build.py
+++ b/fdroidserver/build.py
@@ -240,9 +240,9 @@ def build_local(app, thisbuild, vcs, build_dir, output_dir, extlib_dir, tmp_dir,
 
     if (version != thisbuild['version'] or
             vercode != thisbuild['vercode']):
-        raise BuildException(("Unexpected version/version code in output"
-                             "APK: %s / %s, "
-                             "Expected: %s / %s")
+        raise BuildException(("Unexpected version/version code in output;"
+                             " APK: '%s' / '%s', "
+                             " Expected: '%s' / '%s'")
                              % (version, str(vercode), thisbuild['version'], str(thisbuild['vercode']))
                             )