diff --git a/src/filesystem/basefilesystem.cpp b/src/filesystem/basefilesystem.cpp
index b699836..fe0518c 100644
--- a/src/filesystem/basefilesystem.cpp
+++ b/src/filesystem/basefilesystem.cpp
@@ -4321,7 +4321,7 @@ bool CBaseFileSystem::FixUpPath( const char *pFileName, char *pFixedUpFileName,
 		{
 			//  If the first part of the pFixedUpFilename is pBaseDir
 			//  then lowercase the part after that.
-			if ( *pBaseDir && (iBaseLength+1 < V_strlen( pFixedUpFileName ) ) && (0 != V_strncmp( pBaseDir, pFixedUpFileName, iBaseLength ) )  )
+			if ( *pBaseDir && (iBaseLength+1 < V_strlen( pFixedUpFileName ) ) && (0 == V_strncmp( pBaseDir, pFixedUpFileName, iBaseLength ) )  )
 			{
 				V_strlower( &pFixedUpFileName[iBaseLength-1] );
 			}