diff --git a/src/cc65/datatype.c b/src/cc65/datatype.c
index 103a3a634..9334db40b 100644
--- a/src/cc65/datatype.c
+++ b/src/cc65/datatype.c
@@ -671,8 +671,8 @@ const Type* ArithmeticConvert (const Type* lhst, const Type* rhst)
     ** The integral promotions are performed on both operands.
     */
     if (IsClassFloat(lhst) || IsClassFloat(rhst)) {
-	    Error ("Floating point arithmetic not supported.");
-		return type_long;
+        Error ("Floating point arithmetic not supported.");
+        return type_long;
     }
     lhst = IntPromotion (lhst);
     rhst = IntPromotion (rhst);
diff --git a/src/cc65/typeconv.c b/src/cc65/typeconv.c
index 4e2249836..1003b3c90 100644
--- a/src/cc65/typeconv.c
+++ b/src/cc65/typeconv.c
@@ -129,7 +129,7 @@ static void DoConversion (ExprDesc* Expr, const Type* NewType, int Explicit)
         if (IsClassFloat (OldType) && IsClassInt (NewType)) {
             long IVal = (long)Expr->V.FVal.V;
             if ((Expr->V.FVal.V != FP_D_FromInt(IVal).V) && !Explicit) {
-                Warning ("Floating point constant (%f) converted to integer loses precision (%d)",Expr->V.FVal.V,IVal);
+                Warning ("Floating point constant (%f) converted to integer loses precision (%ld)",Expr->V.FVal.V,IVal);
             }
             Expr->IVal = IVal;
         }