diff --git a/auto/lib/libxslt/conf b/auto/lib/libxslt/conf
index 30ef6d0..8c9ea8b 100644
--- a/auto/lib/libxslt/conf
+++ b/auto/lib/libxslt/conf
@@ -88,3 +88,68 @@
 
     exit 1
 fi
+
+
+    ngx_feature="libexslt"
+    ngx_feature_name=NGX_HAVE_EXSLT
+    ngx_feature_run=no
+    ngx_feature_incs="#include <libexslt/exslt.h>"
+    ngx_feature_path="/usr/include/libxml2"
+    ngx_feature_libs="-lexslt"
+    ngx_feature_test="exsltRegisterAll();"
+    . auto/feature
+
+if [ $ngx_found = no ]; then
+
+    # FreeBSD port
+
+    ngx_feature="libexslt in /usr/local/"
+    ngx_feature_path="/usr/local/include/libxml2 /usr/local/include"
+
+    if [ $NGX_RPATH = YES ]; then
+        ngx_feature_libs="-R/usr/local/lib -L/usr/local/lib -lexslt"
+    else
+        ngx_feature_libs="-L/usr/local/lib -lexslt"
+    fi
+
+    . auto/feature
+fi
+
+
+if [ $ngx_found = no ]; then
+
+    # NetBSD port
+
+    ngx_feature="libexslt in /usr/pkg/"
+    ngx_feature_path="/usr/pkg/include/libxml2 /usr/local/include"
+
+    if [ $NGX_RPATH = YES ]; then
+        ngx_feature_libs="-R/usr/pkg/lib -L/usr/pkg/lib -lexslt"
+    else
+        ngx_feature_libs="-L/usr/pkg/lib -lexslt"
+    fi
+
+    . auto/feature
+fi
+
+
+if [ $ngx_found = no ]; then
+
+    # MacPorts
+
+    ngx_feature="libexslt in /opt/local/"
+    ngx_feature_path="/opt/local/include/libxml2 /opt/local/include"
+
+    if [ $NGX_RPATH = YES ]; then
+        ngx_feature_libs="-R/opt/local/lib -L/opt/local/lib -lexslt"
+    else
+        ngx_feature_libs="-L/opt/local/lib -lexslt"
+    fi
+
+    . auto/feature
+fi
+
+
+if [ $ngx_found = yes ]; then
+    CORE_LIBS="$CORE_LIBS -lexslt"
+fi
diff --git a/src/http/modules/ngx_http_xslt_filter_module.c b/src/http/modules/ngx_http_xslt_filter_module.c
index e4fc5cd..f65ab42 100644
--- a/src/http/modules/ngx_http_xslt_filter_module.c
+++ b/src/http/modules/ngx_http_xslt_filter_module.c
@@ -15,6 +15,10 @@
 #include <libxslt/transform.h>
 #include <libxslt/xsltutils.h>
 
+#if (NGX_HAVE_EXSLT)
+#include <libexslt/exslt.h>
+#endif
+
 
 #ifndef NGX_HTTP_XSLT_REUSE_DTD
 #define NGX_HTTP_XSLT_REUSE_DTD  1
@@ -1269,6 +1273,10 @@
 {
     xmlInitParser();
 
+#if (NGX_HAVE_EXSLT)
+    exsltRegisterAll();
+#endif
+
     ngx_http_next_header_filter = ngx_http_top_header_filter;
     ngx_http_top_header_filter = ngx_http_xslt_header_filter;