diff --git a/src/Types/AbstractList.php b/src/Types/AbstractList.php
index 68c1f88c..cc403ecf 100644
--- a/src/Types/AbstractList.php
+++ b/src/Types/AbstractList.php
@@ -81,7 +81,7 @@ public function __toString(): string
         }
 
         if ($this->keyType) {
-            return 'array<' . $this->keyType . ',' . $this->valueType . '>';
+            return 'array<' . $this->keyType . ', ' . $this->valueType . '>';
         }
 
         if ($this->valueType instanceof Compound) {
diff --git a/src/Types/Iterable_.php b/src/Types/Iterable_.php
index f7d2264b..3ac6ef6c 100644
--- a/src/Types/Iterable_.php
+++ b/src/Types/Iterable_.php
@@ -30,7 +30,7 @@ public function __toString(): string
         }
 
         if ($this->keyType) {
-            return 'iterable<' . $this->keyType . ',' . $this->valueType . '>';
+            return 'iterable<' . $this->keyType . ', ' . $this->valueType . '>';
         }
 
         return 'iterable<' . $this->valueType . '>';