diff --git a/texthook/texthook.cc b/texthook/texthook.cc
index 8c91251..0e2ecd0 100644
--- a/texthook/texthook.cc
+++ b/texthook/texthook.cc
@@ -327,7 +327,7 @@ int TextHook::HookStrlen(BYTE* data)
 {
 	BYTE* orig = data;
 	int nulls = hp.null_length ? hp.null_length : hp.type & USING_UNICODE ? 2 : 1;
-	for (int nullsRemaining = nulls; nullsRemaining >= 0; ++data)
+	for (int nullsRemaining = nulls; nullsRemaining > 0; ++data)
 		if (*data == 0) nullsRemaining -= 1;
 		else nullsRemaining = nulls;
 	return data - orig;