diff --git a/reactos/dll/win32/kernel32/mem/isbad.c b/reactos/dll/win32/kernel32/mem/isbad.c
index 62cf1708cb1..c1617cdb040 100644
--- a/reactos/dll/win32/kernel32/mem/isbad.c
+++ b/reactos/dll/win32/kernel32/mem/isbad.c
@@ -171,9 +171,6 @@ IsBadStringPtrW(IN LPCWSTR lpsz,
     /* Calculate the last page */
     Last = (PWCHAR)((ULONG_PTR)lpsz + (ucchMax * 2) - 2);
 
-    /* Another quick failure case */
-    if ((ULONG_PTR)Last < (ULONG_PTR)lpsz) return TRUE;
-
     /* Enter SEH */
     _SEH2_TRY
     {
@@ -184,7 +181,7 @@ IsBadStringPtrW(IN LPCWSTR lpsz,
         {
             Char = *Current;
             Current++;
-        } while (Char && (Current <= Last));
+        } while (Char && (Current != Last));
     }
     _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
     {
@@ -217,9 +214,6 @@ IsBadStringPtrA(IN LPCSTR lpsz,
     /* Calculate the last page */
     Last = (PCHAR)((ULONG_PTR)lpsz + ucchMax - 1);
 
-    /* Another quick failure case */
-    if ((ULONG_PTR)Last < (ULONG_PTR)lpsz) return TRUE;
-
     /* Enter SEH */
     _SEH2_TRY
     {
@@ -230,7 +224,7 @@ IsBadStringPtrA(IN LPCSTR lpsz,
         {
             Char = *Current;
             Current++;
-        } while (Char && (Current <= Last));
+        } while (Char && (Current != Last));
     }
     _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
     {