diff --git a/build/find_pcre.m4 b/build/find_pcre.m4
index cbce0c2d..45e13ea5 100644
--- a/build/find_pcre.m4
+++ b/build/find_pcre.m4
@@ -53,8 +53,6 @@ for x in ${test_paths}; do
         break
     fi
 done
-    CFLAGS=$save_CFLAGS
-    LDFLAGS=$save_LDFLAGS
 
 if test -n "${pcre_path}"; then
     if test "${pcre_path}" != "no"; then
diff --git a/build/find_xml.m4 b/build/find_xml.m4
index 7410084a..cea661c0 100644
--- a/build/find_xml.m4
+++ b/build/find_xml.m4
@@ -46,8 +46,6 @@ for x in ${test_paths}; do
         break
     fi
 done
-    CFLAGS=$save_CFLAGS
-    LDFLAGS=$save_LDFLAGS
 
 if test -n "${libxml2_path}"; then
     if test "${libxml2_path}" != "no"; then