diff --git a/src/codegen.cpp b/src/codegen.cpp
index 2536719..0705fbb 100644
--- a/src/codegen.cpp
+++ b/src/codegen.cpp
@@ -603,7 +603,8 @@ namespace AST {
         builder.block = inner_bb;
         builder.builder->SetInsertPoint(inner_bb);
         this->m_loop->codegen(builder, inner_scope, allocator);
-        builder.builder->CreateBr(after_bb);
+        if (builder.block->getTerminator() == nullptr)
+            builder.builder->CreateBr(after_bb);
 
         // Loop after-part
         builder.block = after_bb;
@@ -648,7 +649,8 @@ namespace AST {
         builder.builder->SetInsertPoint(inner_bb);
         builder.block = inner_bb;
         this->m_loop->codegen(builder, inner_scope, allocator);
-        builder.builder->CreateBr(cond_bb);
+        if (builder.block->getTerminator() == nullptr)
+            builder.builder->CreateBr(cond_bb);
 
         // After
         builder.builder->SetInsertPoint(after_bb);