diff --git a/expression.c b/expression.c
index aa8b641..e6a22ce 100644
--- a/expression.c
+++ b/expression.c
@@ -136,36 +136,38 @@ void ExpressionStackShow(Picoc *pc, struct ExpressionStack *StackTop)
 
             switch (StackTop->Val->Typ->Base) {
             case TypeVoid:
-				printf("void");
-				break;
+                printf("void");
+                break;
             case TypeInt:
-				printf("%d:int", StackTop->Val->Val->Integer);
-				break;
+                printf("%d:int", StackTop->Val->Val->Integer);
+                break;
             case TypeShort:
-				printf("%d:short", StackTop->Val->Val->ShortInteger);
-				break;
+                printf("%d:short", StackTop->Val->Val->ShortInteger);
+                break;
             case TypeChar:
-				printf("%d:char", StackTop->Val->Val->Character);
-				break;
+                printf("%d:char", StackTop->Val->Val->Character);
+                break;
             case TypeLong:
-				printf("%ld:long", StackTop->Val->Val->LongInteger);
-				break;
+                printf("%ld:long", StackTop->Val->Val->LongInteger);
+                break;
             case TypeUnsignedShort:
-				printf("%d:unsigned short", StackTop->Val->Val->UnsignedShortInteger);
-				break;
+                printf("%d:unsigned short", StackTop->Val->Val->UnsignedShortInteger);
+                break;
             case TypeUnsignedInt:
-				printf("%d:unsigned int", StackTop->Val->Val->UnsignedInteger);
-				break;
+                printf("%d:unsigned int", StackTop->Val->Val->UnsignedInteger);
+                break;
             case TypeUnsignedLong:
-				printf("%ld:unsigned long", StackTop->Val->Val->UnsignedLongInteger);
-				break;
+                printf("%ld:unsigned long", StackTop->Val->Val->UnsignedLongInteger);
+                break;
             case TypeFP:
-				printf("%f:fp", StackTop->Val->Val->FP); break;
-            case TypeFunction:  printf("%s:function", StackTop->Val->Val->Identifier);
-				break;
+                printf("%f:fp", StackTop->Val->Val->FP); 
+                break;
+            case TypeFunction:  
+                printf("%s:function", StackTop->Val->Val->Identifier);
+                break;
             case TypeMacro:
-				printf("%s:macro", StackTop->Val->Val->Identifier);
-				break;
+                printf("%s:macro", StackTop->Val->Val->Identifier);
+                break;
             case TypePointer:
                 if (StackTop->Val->Val->Pointer == NULL)
                     printf("ptr(NULL)");