1 files changed, 6 insertions, 1 deletions
diff --git a/src/main/java/org/shedlang/compiler/stackir/StackCompiler.java b/src/main/java/org/shedlang/compiler/stackir/StackCompiler.java
index c96b8cfd..75afaa31 100644
--- a/src/main/java/org/shedlang/compiler/stackir/StackCompiler.java
+++ b/src/main/java/org/shedlang/compiler/stackir/StackCompiler.java
@@ -15,7 +15,12 @@ public class StackCompiler {
     private static PVector<Instruction> compileBinaryOperation(TypedBinaryOperationNode node) {
         return compileExpression(node.left())
             .plusAll(compileExpression(node.right()))
-            .plus(new IntAddInstruction(node.source()));
+            .plus(switch (node.operator()) {
+                case INT_ADD ->
+                    new IntAddInstruction(node.source());
+                case INT_SUB ->
+                    new IntSubInstruction(node.source());
+            });
     }
 
     private static PVector<Instruction> compileBoolLiteral(TypedBoolLiteralNode node) {