diff --git a/gnu/packages/gcc.scm b/gnu/packages/gcc.scm
index 64ba37fd69..e437bf5826 100644
--- a/gnu/packages/gcc.scm
+++ b/gnu/packages/gcc.scm
@@ -843,7 +843,8 @@ (define-public gcc-14
                   #~(modify-phases #$phases
                       (add-before 'configure 'pre-x86-configure
                         (lambda _
-                          (substitute* "gcc/config/i386/t-linux64"
+                          (substitute* '("gcc/config/i386/t-linux64"
+                                         "gcc/config/i386/t-gnu64")
                             (("\\.\\./lib64") "../lib"))))))))
     (properties
      `((compiler-cpu-architectures