diff --git a/src/checker.ts b/src/checker.ts
index 600eb9a1c..8cf91d828 100644
--- a/src/checker.ts
+++ b/src/checker.ts
@@ -801,6 +801,7 @@ export class Checker {
         break;
       }
 
+      case SyntaxKind.IfStatement:
       case SyntaxKind.ReturnStatement:
       case SyntaxKind.ExpressionStatement:
         break;
@@ -835,6 +836,7 @@ export class Checker {
         break;
       }
 
+      case SyntaxKind.IfStatement:
       case SyntaxKind.ExpressionStatement:
       case SyntaxKind.ReturnStatement:
       case SyntaxKind.StructDeclaration:
diff --git a/src/cst.ts b/src/cst.ts
index d39134441..1625bc236 100644
--- a/src/cst.ts
+++ b/src/cst.ts
@@ -224,6 +224,7 @@ export class Scope {
       }
       case SyntaxKind.ExpressionStatement:
       case SyntaxKind.ReturnStatement:
+      case SyntaxKind.IfStatement:
         break;
       case SyntaxKind.LetDeclaration:
       {