diff --git a/bzip2.spec b/bzip2.spec
index fbf6baa..c3283a1 100644
--- a/bzip2.spec
+++ b/bzip2.spec
@@ -50,12 +50,12 @@ Libraries for applications using the bzip2 compression format.
 %build
 
 make -f Makefile-libbz2_so "CC=%{__cc} AR=%{__ar} RANLIB=%{__ranlib} \
-	CFLAGS="$RPM_OPT_FLAGS -D_FILE_OFFSET_BITS=64 -fpic -fPIC" \
+	CFLAGS=\"$RPM_OPT_FLAGS -D_FILE_OFFSET_BITS=64 -fpic -fPIC\" \
 	%{?_smp_mflags} all"
 
 rm -f *.o
 make "CC=%{__cc} AR=%{__ar} RANLIB=%{__ranlib} \
-	CFLAGS="$RPM_OPT_FLAGS -D_FILE_OFFSET_BITS=64" \
+	CFLAGS=\"$RPM_OPT_FLAGS -D_FILE_OFFSET_BITS=64\" \
 	%{?_smp_mflags} all"
 
 %install