diff --git a/config-serializer/config-items/HoldModifiersMacroAction.ts b/config-serializer/config-items/HoldModifiersMacroAction.ts
index 3a5d91a8..27d6e163 100644
--- a/config-serializer/config-items/HoldModifiersMacroAction.ts
+++ b/config-serializer/config-items/HoldModifiersMacroAction.ts
@@ -1,5 +1,6 @@
-import {UhkBuffer} from '../UhkBuffer';
+import {KeyModifiers} from './KeystrokeModifiersAction';
 import {MacroAction, MacroActionId, macroActionType} from './MacroAction';
+import {UhkBuffer} from '../UhkBuffer';
 import {assertUInt8} from '../assert';
 
 export class HoldModifiersMacroAction extends MacroAction {
@@ -34,4 +35,8 @@ export class HoldModifiersMacroAction extends MacroAction {
     toString(): string {
         return `<HoldModifiersMacroAction modifierMask="${this.modifierMask}">`;
     }
+
+    isModifierActive(modifier: KeyModifiers): boolean {
+        return (this.modifierMask & modifier) > 0;
+    }
 }
diff --git a/config-serializer/config-items/PressModifiersMacroAction.ts b/config-serializer/config-items/PressModifiersMacroAction.ts
index b41001b3..7b80dc4f 100644
--- a/config-serializer/config-items/PressModifiersMacroAction.ts
+++ b/config-serializer/config-items/PressModifiersMacroAction.ts
@@ -1,3 +1,4 @@
+import {KeyModifiers} from './KeystrokeModifiersAction';
 import {MacroAction, MacroActionId, macroActionType} from './MacroAction';
 import {UhkBuffer} from '../UhkBuffer';
 import {assertUInt8} from '../assert';
@@ -34,4 +35,8 @@ export class PressModifiersMacroAction extends MacroAction {
     toString(): string {
         return `<PressModifiersMacroAction modifierMask="${this.modifierMask}">`;
     }
+
+    isModifierActive(modifier: KeyModifiers): boolean {
+        return (this.modifierMask & modifier) > 0;
+    }
 }
diff --git a/config-serializer/config-items/ReleaseModifiersMacroAction.ts b/config-serializer/config-items/ReleaseModifiersMacroAction.ts
index f9121be4..b6791618 100644
--- a/config-serializer/config-items/ReleaseModifiersMacroAction.ts
+++ b/config-serializer/config-items/ReleaseModifiersMacroAction.ts
@@ -1,3 +1,4 @@
+import {KeyModifiers} from './KeystrokeModifiersAction';
 import {MacroAction, MacroActionId, macroActionType} from './MacroAction';
 import {UhkBuffer} from '../UhkBuffer';
 import {assertUInt8} from '../assert';
@@ -34,4 +35,8 @@ export class ReleaseModifiersMacroAction extends MacroAction {
     toString(): string {
         return `<ReleaseModifiersMacroAction modifierMask="${this.modifierMask}">`;
     }
+
+    isModifierActive(modifier: KeyModifiers): boolean {
+        return (this.modifierMask & modifier) > 0;
+    }
 }