6 files changed, 6 insertions, 6 deletions
diff --git a/src/passes/LowerIfElse.cpp b/src/passes/LowerIfElse.cpp
index 711f5469c..26ae321e6 100644
--- a/src/passes/LowerIfElse.cpp
+++ b/src/passes/LowerIfElse.cpp
@@ -32,7 +32,7 @@
 
 namespace wasm {
 
-struct LowerIfElse : public Pass {
+struct LowerIfElse : public WalkerPass<WasmWalker> {
   MixedArena* allocator;
   std::unique_ptr<NameManager> namer;
 
diff --git a/src/passes/MergeBlocks.cpp b/src/passes/MergeBlocks.cpp
index 3d7afc4cb..5543c407b 100644
--- a/src/passes/MergeBlocks.cpp
+++ b/src/passes/MergeBlocks.cpp
@@ -23,7 +23,7 @@
 
 namespace wasm {
 
-struct MergeBlocks : public Pass {
+struct MergeBlocks : public WalkerPass<WasmWalker> {
   void visitBlock(Block *curr) override {
     bool more = true;
     while (more) {
diff --git a/src/passes/RemoveImports.cpp b/src/passes/RemoveImports.cpp
index 0c4924a45..0938bbed3 100644
--- a/src/passes/RemoveImports.cpp
+++ b/src/passes/RemoveImports.cpp
@@ -27,7 +27,7 @@
 
 namespace wasm {
 
-struct RemoveImports : public Pass {
+struct RemoveImports : public WalkerPass<WasmWalker> {
   MixedArena* allocator;
   std::map<Name, Import*> importsMap;
 
diff --git a/src/passes/RemoveUnusedBrs.cpp b/src/passes/RemoveUnusedBrs.cpp
index 395b0f1ba..f01add24c 100644
--- a/src/passes/RemoveUnusedBrs.cpp
+++ b/src/passes/RemoveUnusedBrs.cpp
@@ -23,7 +23,7 @@
 
 namespace wasm {
 
-struct RemoveUnusedBrs : public Pass {
+struct RemoveUnusedBrs : public WalkerPass<WasmWalker> {
   // preparation: try to unify branches, as the fewer there are, the higher a chance we can remove them
   // specifically for if-else, turn an if-else with branches to the same target at the end of each
   // child, and with a value, to a branch to that target containing the if-else
diff --git a/src/passes/RemoveUnusedNames.cpp b/src/passes/RemoveUnusedNames.cpp
index 62de48567..d3057c78a 100644
--- a/src/passes/RemoveUnusedNames.cpp
+++ b/src/passes/RemoveUnusedNames.cpp
@@ -23,7 +23,7 @@
 
 namespace wasm {
 
-struct RemoveUnusedNames : public Pass {
+struct RemoveUnusedNames : public WalkerPass<WasmWalker> {
   // We maintain a list of branches that we saw in children, then when we reach
   // a parent block, we know if it was branched to
   std::set<Name> branchesSeen;
diff --git a/src/passes/SimplifyLocals.cpp b/src/passes/SimplifyLocals.cpp
index b1adf5c26..bf3775445 100644
--- a/src/passes/SimplifyLocals.cpp
+++ b/src/passes/SimplifyLocals.cpp
@@ -23,7 +23,7 @@
 
 namespace wasm {
 
-struct SimplifyLocals : public Pass {
+struct SimplifyLocals : public WalkerPass<WasmWalker> {
   void visitBlock(Block *curr) override {
     // look for pairs of setlocal-getlocal, which can be just a setlocal (since it returns a value)
     if (curr->list.size() == 0) return;