1 files changed, 5 insertions, 1 deletions
diff --git a/src/main/java/org/shedlang/compiler/parser/Parser.java b/src/main/java/org/shedlang/compiler/parser/Parser.java
index 14eb903f..45d3f1b1 100644
--- a/src/main/java/org/shedlang/compiler/parser/Parser.java
+++ b/src/main/java/org/shedlang/compiler/parser/Parser.java
@@ -1343,12 +1343,16 @@ public class Parser {
     static UntypedTypeLevelParamNode parseTypeLevelParam(TokenIterator<TokenType> tokens) {
         var start = tokens.position();
 
+        var isEffectParam = tokens.trySkip(TokenType.SYMBOL_BANG);
+
         var name = tokens.nextValue(TokenType.IDENTIFIER);
 
         var end = tokens.position();
         var source = start.to(end);
 
-        return new UntypedTypeParamNode(name, source);
+        return isEffectParam
+            ? new UntypedEffectParamNode(name, source)
+            : new UntypedTypeParamNode(name, source);
     }
 
     private static UntypedTypeLevelReferenceNode parseTypeLevelReference(TokenIterator<TokenType> tokens) {