diff --git a/AI_VoiceOver/Compatibility.lua b/AI_VoiceOver/Compatibility.lua
index 296e3b80..ada88af9 100755
--- a/AI_VoiceOver/Compatibility.lua
+++ b/AI_VoiceOver/Compatibility.lua
@@ -211,7 +211,7 @@ if not WOW_PROJECT_ID and INTERFACE_VERSION < 70000 then
     end
 end
 
-if not WOW_PROJECT_ID and string.sub(CLIENT_VERSION, 1, 4) == "1.12" then
+if not WOW_PROJECT_ID and INTERFACE_VERSION < 11300 then
 
     function Utils:GetNPCName()
         return UnitName("npc")
diff --git a/AI_VoiceOver_112/Compatibility.lua b/AI_VoiceOver_112/Compatibility.lua
index efb1f9ef..1b872824 100644
--- a/AI_VoiceOver_112/Compatibility.lua
+++ b/AI_VoiceOver_112/Compatibility.lua
@@ -90,7 +90,7 @@ function CreateFrame(frameType, name, parent, template)
     return frame
 end
 
-if not WOW_PROJECT_ID and string.sub(CLIENT_VERSION, 1, 4) == "1.12" then
+if not WOW_PROJECT_ID and INTERFACE_VERSION < 11300 then
 
     function Utils:GetNPCName()
         return UnitName("npc")