diff --git a/ssc/ast/nodes.functions.cs b/ssc/ast/nodes.functions.cs
index d0994e0..e0817e6 100644
--- a/ssc/ast/nodes.functions.cs
+++ b/ssc/ast/nodes.functions.cs
@@ -52,7 +52,7 @@ namespace arookas {
 				throw new sunArgumentCountException(this, symbol);
 			}
 			Arguments.Compile(compiler);
-			symbol.OpenCallSite(compiler, Arguments.Count);
+			symbol.OpenRelocation(symbol.CreateCallSite(compiler, Arguments.Count));
 			if (IsStatement) {
 				compiler.Binary.WritePOP();
 			}
diff --git a/ssc/symbol.cs b/ssc/symbol.cs
index a3e57b1..e5bdc43 100644
--- a/ssc/symbol.cs
+++ b/ssc/symbol.cs
@@ -111,6 +111,8 @@ namespace arookas {
 			: base(name) {
 			mParameters = parameterInfo;
 		}
+
+		public abstract sunRelocation CreateCallSite(sunCompiler compiler, int argCount);
 	}
 
 	class sunBuiltinSymbol : sunCallableSymbol {
@@ -135,6 +137,9 @@ namespace arookas {
 		public override void Compile(sunCompiler compiler) {
 			// don't compile builtins
 		}
+		public override sunRelocation CreateCallSite(sunCompiler compiler, int argCount) {
+			return new sunBuiltinCallSite(this, compiler, argCount);
+		}
 	}
 
 	class sunFunctionSymbol : sunCallableSymbol {
@@ -174,6 +179,9 @@ namespace arookas {
 			compiler.Binary.WriteRET0();
 			compiler.Context.Scopes.Pop();
 		}
+		public override sunRelocation CreateCallSite(sunCompiler compiler, int argCount) {
+			return new sunFunctionCallSite(this, compiler, argCount);
+		}
 	}
 
 	class sunParameterInfo : IEnumerable<string> {