2 files changed, 5 insertions, 9 deletions
diff --git a/src/passes/Print.cpp b/src/passes/Print.cpp
index ecdfe16eb..9cc8b52ca 100644
--- a/src/passes/Print.cpp
+++ b/src/passes/Print.cpp
@@ -2023,11 +2023,8 @@ struct PrintExpressionContents
   void visitNop(Nop* curr) { printMinor(o, "nop"); }
   void visitUnreachable(Unreachable* curr) { printMinor(o, "unreachable"); }
   void visitPop(Pop* curr) {
-    prepareColor(o) << "pop";
-    for (auto type : curr->type) {
-      o << ' ';
-      printType(type);
-    }
+    prepareColor(o) << "pop ";
+    printType(curr->type);
     restoreNormalColor(o);
   }
   void visitTupleMake(TupleMake* curr) {
diff --git a/src/wasm/wasm-s-parser.cpp b/src/wasm/wasm-s-parser.cpp
index af042bd55..26af9ee00 100644
--- a/src/wasm/wasm-s-parser.cpp
+++ b/src/wasm/wasm-s-parser.cpp
@@ -2394,11 +2394,10 @@ Expression* SExpressionWasmBuilder::makeMemoryFill(Element& s) {
 
 Expression* SExpressionWasmBuilder::makePop(Element& s) {
   auto ret = allocator.alloc<Pop>();
-  std::vector<Type> types;
-  for (size_t i = 1; i < s.size(); ++i) {
-    types.push_back(elementToType(*s[i]));
+  if (s.size() != 2) {
+    throw SParseException("expected 'pop <valtype>'", s);
   }
-  ret->type = Type(types);
+  ret->type = elementToType(*s[1]);
   ret->finalize();
   return ret;
 }