diff --git a/dlls/user/lstr.c b/dlls/user/lstr.c
index 2d49ee1fc90..a25c600ed8d 100644
--- a/dlls/user/lstr.c
+++ b/dlls/user/lstr.c
@@ -236,7 +236,7 @@ LPSTR WINAPI CharPrevExA( WORD codepage, LPCSTR start, LPCSTR ptr, DWORD flags )
     while (*start && (start < ptr))
     {
         LPCSTR next = CharNextExA( codepage, start, flags );
-        if (next > ptr) break;
+        if (next >= ptr) break;
         start = next;
     }
     return (LPSTR)start;