1 files changed, 2 insertions, 2 deletions
diff --git a/src/passes/Flatten.cpp b/src/passes/Flatten.cpp
index 13aa985aa..0a6a7022a 100644
--- a/src/passes/Flatten.cpp
+++ b/src/passes/Flatten.cpp
@@ -68,7 +68,7 @@ struct Flatten
       return;
     }
 
-    if (Flat::isControlFlowStructure(curr)) {
+    if (Properties::isControlFlowStructure(curr)) {
       // handle control flow explicitly. our children do not have control flow,
       // but they do have preludes which we need to set up in the right place
 
@@ -291,7 +291,7 @@ struct Flatten
     // next, finish up: migrate our preludes if we can
     if (!ourPreludes.empty()) {
       auto* parent = getParent();
-      if (parent && !Flat::isControlFlowStructure(parent)) {
+      if (parent && !Properties::isControlFlowStructure(parent)) {
         auto& parentPreludes = preludes[parent];
         for (auto* prelude : ourPreludes) {
           parentPreludes.push_back(prelude);