diff --git a/webkitgtk4.spec b/webkitgtk4.spec
index 981c8e3..859f85d 100644
--- a/webkitgtk4.spec
+++ b/webkitgtk4.spec
@@ -144,7 +144,7 @@ rm -rf Source/ThirdParty/qunit/
 %endif
 
 %if 0%{?fedora}
-%global optflags %{optflags} -DUSER_AGENT_GTK_DISTRIBUTOR_NAME=\\"Fedora\\"
+%global optflags %{optflags} -DUSER_AGENT_GTK_DISTRIBUTOR_NAME=\'\\"Fedora\\"\'
 %endif
 
 # Disable ld.gold on s390 as it does not have it.