diff --git a/auto/lib/perl/make b/auto/lib/perl/make
index 9c5e826e8..260bd95a0 100644
--- a/auto/lib/perl/make
+++ b/auto/lib/perl/make
@@ -31,7 +31,7 @@ $NGX_OBJS/src/http/modules/perl/Makefile: \\
 
 	cd $NGX_OBJS/src/http/modules/perl \\
 		&& NGX_PM_CFLAGS="\$(NGX_PM_CFLAGS) -g $NGX_CC_OPT" \\
-			NGX_INCS="\$(CORE_INCS) \$(HTTP_INCS)" \\
+			NGX_INCS="$CORE_INCS $NGX_OBJS $HTTP_INCS" \\
 			NGX_DEPS="\$(CORE_DEPS) \$(HTTP_DEPS)" \\
 		$NGX_PERL Makefile.PL \\
 			LIB=$NGX_PERL_MODULES \\
diff --git a/src/http/modules/perl/Makefile.PL b/src/http/modules/perl/Makefile.PL
index ff8b2c634..03348b555 100644
--- a/src/http/modules/perl/Makefile.PL
+++ b/src/http/modules/perl/Makefile.PL
@@ -22,7 +22,7 @@ WriteMakefile(
 
     depend => {
         'nginx.c'     => join(" ", map {
-                             "../../../../../$_"
+                             m#^/# ? $_ : "../../../../../$_"
                          } (split(/\s+/, $ENV{NGX_DEPS}),
                             "src/http/modules/perl/ngx_http_perl_module.h"))
     },