diff --git a/blt.spec b/blt.spec
index fdba686..1e7812a 100644
--- a/blt.spec
+++ b/blt.spec
@@ -86,7 +86,7 @@ mv man/bitmap.mann man/bltbitmap.mann
 
 %build
 # fix RHBZ 1105266
-sed -i -e |SHLIB_LD_FLAGS='-rdynamic -shared -Wl,-E -Wl,-soname,$@'|SHLIB_LD_FLAGS='-rdynamic -shared -Wl,-E -Wl,-soname,$@ -ltk -ltcl'| configure
+sed -i -e '|SHLIB_LD_FLAGS=\'-rdynamic -shared -Wl,-E -Wl,-soname,$@\'|SHLIB_LD_FLAGS=\'-rdynamic -shared -Wl,-E -Wl,-soname,$@ -ltk -ltcl\'|' configure
 %configure --with-tcl=%{_libdir} --with-tk=%{_libdir} --with-blt=%{tcl_sitelib} --includedir=%{_includedir}/%{name}
 pushd src/shared
 # no _smp_mflags; race conditions.