diff --git a/src/http/ngx_http_variables.c b/src/http/ngx_http_variables.c
index a2852b0dd..0231d6727 100644
--- a/src/http/ngx_http_variables.c
+++ b/src/http/ngx_http_variables.c
@@ -1666,6 +1666,8 @@ ngx_http_variable_pid(ngx_http_request_t *r,
 }
 
 
+#if (NGX_PCRE)
+
 static ngx_int_t
 ngx_http_variable_not_found(ngx_http_request_t *r, ngx_http_variable_value_t *v,
     uintptr_t data)
@@ -1816,6 +1818,8 @@ ngx_http_regex_exec(ngx_http_request_t *r, ngx_http_regex_t *re, ngx_str_t *s)
     return NGX_OK;
 }
 
+#endif
+
 
 ngx_int_t
 ngx_http_variables_add_core_vars(ngx_conf_t *cf)
diff --git a/src/http/ngx_http_variables.h b/src/http/ngx_http_variables.h
index 2056befc5..80ce49321 100644
--- a/src/http/ngx_http_variables.h
+++ b/src/http/ngx_http_variables.h
@@ -41,21 +41,6 @@ struct ngx_http_variable_s {
 };
 
 
-typedef struct {
-    ngx_uint_t                    capture;
-    ngx_int_t                     index;
-} ngx_http_regex_variable_t;
-
-
-typedef struct {
-    ngx_regex_t                  *regex;
-    ngx_uint_t                    ncaptures;
-    ngx_http_regex_variable_t    *variables;
-    ngx_uint_t                    nvariables;
-    ngx_str_t                     name;
-} ngx_http_regex_t;
-
-
 ngx_http_variable_t *ngx_http_add_variable(ngx_conf_t *cf, ngx_str_t *name,
     ngx_uint_t flags);
 ngx_int_t ngx_http_get_variable_index(ngx_conf_t *cf, ngx_str_t *name);
@@ -74,11 +59,30 @@ ngx_int_t ngx_http_variable_unknown_header(ngx_http_variable_value_t *v,
 #define ngx_http_clear_variable(r, index) r->variables0[index].text.data = NULL;
 
 
+#if (NGX_PCRE)
+
+typedef struct {
+    ngx_uint_t                    capture;
+    ngx_int_t                     index;
+} ngx_http_regex_variable_t;
+
+
+typedef struct {
+    ngx_regex_t                  *regex;
+    ngx_uint_t                    ncaptures;
+    ngx_http_regex_variable_t    *variables;
+    ngx_uint_t                    nvariables;
+    ngx_str_t                     name;
+} ngx_http_regex_t;
+
+
 ngx_http_regex_t *ngx_http_regex_compile(ngx_conf_t *cf,
     ngx_regex_compile_t *rc);
 ngx_int_t ngx_http_regex_exec(ngx_http_request_t *r, ngx_http_regex_t *re,
     ngx_str_t *s);
 
+#endif
+
 
 ngx_int_t ngx_http_variables_add_core_vars(ngx_conf_t *cf);
 ngx_int_t ngx_http_variables_init_vars(ngx_conf_t *cf);