diff --git a/src/Validator/Rules/UniqueFragmentNames.php b/src/Validator/Rules/UniqueFragmentNames.php
index 20422e3..12e92a5 100644
--- a/src/Validator/Rules/UniqueFragmentNames.php
+++ b/src/Validator/Rules/UniqueFragmentNames.php
@@ -13,7 +13,7 @@ class UniqueFragmentNames
 {
     static function duplicateFragmentNameMessage($fragName)
     {
-        return "There can only be one fragment named \"$fragName\".";
+        return "There can be only one fragment named \"$fragName\".";
     }
 
     public $knownFragmentNames;
diff --git a/src/Validator/Rules/UniqueOperationNames.php b/src/Validator/Rules/UniqueOperationNames.php
index 27122b5..30e494f 100644
--- a/src/Validator/Rules/UniqueOperationNames.php
+++ b/src/Validator/Rules/UniqueOperationNames.php
@@ -12,7 +12,7 @@ class UniqueOperationNames
 {
     static function duplicateOperationNameMessage($operationName)
     {
-      return "There can only be one operation named \"$operationName\".";
+      return "There can be only one operation named \"$operationName\".";
     }
 
     public $knownOperationNames;