diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0ac23128b..59c46ffa2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,7 @@ All notable changes to this project will be documented in this file.
 - DefineEditText - ampersand in link href
 - AS1/2 - cannot use globalfunc/const variable names
 - AS2 - class detection when no constructor found
+- AS1/2 - subtract precedence
 
 ## [14.6.0] - 2021-11-22
 ### Added
diff --git a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/action/model/operations/SubtractActionItem.java b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/action/model/operations/SubtractActionItem.java
index 048c1f031..67ba02ff5 100644
--- a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/action/model/operations/SubtractActionItem.java
+++ b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/action/model/operations/SubtractActionItem.java
@@ -55,10 +55,19 @@ public class SubtractActionItem extends BinaryOpItem implements CompoundableBina
         if ((leftSide instanceof DirectValueActionItem)
                 && (((((DirectValueActionItem) leftSide).value instanceof Float) && (((Float) ((DirectValueActionItem) leftSide).value) == 0f))
                 || ((((DirectValueActionItem) leftSide).value instanceof Double) && (((Double) ((DirectValueActionItem) leftSide).value) == 0.0))
-                || ((((DirectValueActionItem) leftSide).value instanceof Long) && (((Long) ((DirectValueActionItem) leftSide).value) == 0L)))) {
+                || ((((DirectValueActionItem) leftSide).value instanceof Long) && (((Long) ((DirectValueActionItem) leftSide).value) == 0L))
+                || ((DirectValueActionItem) leftSide).isString() && "0".equals(((DirectValueActionItem) leftSide).toString()))) {
             writer.append(operator);
             writer.append(" ");
-            rightSide.appendTry(writer, localData);
+
+            int rightPrecedence = rightSide.getPrecedence();
+            if (rightPrecedence >= precedence && rightPrecedence != GraphTargetItem.NOPRECEDENCE) {
+                writer.append("(");
+                rightSide.toString(writer, localData, coerceRight);
+                writer.append(")");
+            } else {
+                rightSide.toString(writer, localData, coerceRight);
+            }
             return writer;
         } else if (rightSide.getPrecedence() >= precedence) { // >=  add or subtract too