diff --git a/gnu/packages/gcc.scm b/gnu/packages/gcc.scm
index 00e2fa7d66..0fdb5ca9b8 100644
--- a/gnu/packages/gcc.scm
+++ b/gnu/packages/gcc.scm
@@ -213,7 +213,7 @@ (define-public gcc-4.7
                 ;; Fix the dynamic linker's file name.
                 (substitute* (find-files "gcc/config"
                                          "^(linux|gnu|sysv4)(64|-elf|-eabi)?\\.h$")
-                  (("#define (GLIBC|GNU_USER)_DYNAMIC_LINKER([^ ]*).*$"
+                  (("#define (GLIBC|GNU_USER)_DYNAMIC_LINKER([^ \t]*).*$"
                     _ gnu-user suffix)
                    (format #f "#define ~a_DYNAMIC_LINKER~a \"~a\"~%"
                            gnu-user suffix