diff --git a/Library/Measure.cpp b/Library/Measure.cpp
index 8b8681d2..bd2351ea 100644
--- a/Library/Measure.cpp
+++ b/Library/Measure.cpp
@@ -246,11 +246,6 @@ const WCHAR* CMeasure::CheckSubstitute(const WCHAR* buffer)
 				int flags = PCRE_UTF8;
 				int offset = 0;
 
-				if (m_Substitute[i].empty())
-				{
-					m_Substitute[i] = L"^$";
-				}
-
 				re = pcre_compile(
 					ConvertToUTF8(m_Substitute[i].c_str()).c_str(),   // the pattern
 					flags,						// default options
@@ -428,6 +423,11 @@ std::wstring CMeasure::ExtractWord(std::wstring& buffer)
 
 	buffer.erase(0, end);
 
+	if (m_RegExpSubstitute && ret.empty())
+	{
+		ret = L"^$";
+	}
+
 	return ret;
 }