diff --git a/win32/zoitechat.props b/win32/zoitechat.props
index 65a43e27..89993a6e 100644
--- a/win32/zoitechat.props
+++ b/win32/zoitechat.props
@@ -106,7 +106,11 @@
 		<ZoiteChatLib>$(ZoiteChatBuild)\$(PlatformName)\lib\</ZoiteChatLib>
 		<ZoiteChatPdb>$(ZoiteChatBuild)\$(PlatformName)\pdb\</ZoiteChatPdb>
 		<ZoiteChatRel>$(ZoiteChatBuild)\$(PlatformName)\rel\</ZoiteChatRel>
-		<IsccPath>"$(ProgramFiles)\Inno Setup 6\iscc.exe"</IsccPath>
+		<IsccPath Condition="'$(IsccPath)'=='' and '$(ZOITECHAT_ISCC_PATH)'!=''">$(ZOITECHAT_ISCC_PATH)</IsccPath>
+		<IsccPath Condition="'$(IsccPath)'=='' and Exists('$(ProgramFiles)\Inno Setup 6\iscc.exe')">"$(ProgramFiles)\Inno Setup 6\iscc.exe"</IsccPath>
+		<IsccPath Condition="'$(IsccPath)'=='' and '$(ProgramFiles(x86))'!='' and Exists('$(ProgramFiles(x86))\Inno Setup 6\iscc.exe')">"$(ProgramFiles(x86))\Inno Setup 6\iscc.exe"</IsccPath>
+		<IsccPath Condition="'$(IsccPath)'=='' and Exists('$(ProgramW6432)\Inno Setup 6\iscc.exe')">"$(ProgramW6432)\Inno Setup 6\iscc.exe"</IsccPath>
+		<IsccPath Condition="'$(IsccPath)'==''">"$(ProgramFiles)\Inno Setup 6\iscc.exe"</IsccPath>
 	</PropertyGroup>
 
 	<PropertyGroup>