diff --git a/pype/settings/defaults/system_settings/tools.json b/pype/settings/defaults/system_settings/tools.json
index af5772705c..fce847fb55 100644
--- a/pype/settings/defaults/system_settings/tools.json
+++ b/pype/settings/defaults/system_settings/tools.json
@@ -36,18 +36,18 @@
             }
         },
         "variants": {
-            "mtoa_3.2": {
+            "mtoa_3_2": {
                 "MTOA_VERSION": "3.2",
                 "__environment_keys__": {
-                    "mtoa_3.2": [
+                    "mtoa_3_2": [
                         "MTOA_VERSION"
                     ]
                 }
             },
-            "mtoa_3.1": {
+            "mtoa_3_1": {
                 "MTOA_VERSION": "3.1",
                 "__environment_keys__": {
-                    "mtoa_3.1": [
+                    "mtoa_3_1": [
                         "MTOA_VERSION"
                     ]
                 }