diff --git a/gcc.spec b/gcc.spec
index 98c0438..919bb56 100644
--- a/gcc.spec
+++ b/gcc.spec
@@ -796,7 +796,7 @@ to NVidia PTX capable devices if available.
 %patch15 -p0 -b .pr101786~
 %patch16 -p0 -b .stringify-__VA_OPT__~
 %patch17 -p0 -b .pr102642~
-%patch18 -p0 -b .bidi~
+%patch18 -p1 -b .bidi~
 
 %if 0%{?rhel} >= 9
 %patch100 -p1 -b .fortran-fdec-duplicates~