diff --git a/llvm15.spec b/llvm15.spec
index 262346a..bc219da 100644
--- a/llvm15.spec
+++ b/llvm15.spec
@@ -903,7 +903,7 @@ mv libcxxabi-%{_version}.src projects/libcxxabi
 #    hardening. The problem is in sanitizers from compiler-rt.
 # 2) Remove the -g. We don't want it in stage1 and it will be added by cmake in
 #    the following stage.
-%global cleaned_flags %(echo -n %{optflags} | sed 's/-D_FORTIFY_SOURCE=./-D_FORTIFY_SOURCE=0/;s/\\B-g\\b//g')
+%global cleaned_flags %(echo %{optflags} | sed 's/-D_FORTIFY_SOURCE=./-D_FORTIFY_SOURCE=0/;s/\\B-g\\b//g')
 
 %global flags %{cleaned_flags}
 %ifarch armv6hl
@@ -980,7 +980,7 @@ find ./stage1 \( -name '*.o' -or -name '*.a' \) -delete
 #    step, which uses -Werror, from recognizing the availability of other flags.
 if ! ./stage1/bin/clang -c -xc -Werror -fstack-clash-protection -o /dev/null /dev/null;
 then
-    flags=$(echo -n %flags | sed 's/-fstack-clash-protection//');
+    flags=$(echo %flags | sed 's/-fstack-clash-protection//');
 fi
 # 4) Add -fno-plt: With -Wl,-z,now the PLT is basically dead code, so we can
 #    now go the direct route for quite frequent cross-DSO calls. This reduces