diff --git a/lang/p5-Tcl/Makefile b/lang/p5-Tcl/Makefile
index fc2e25fd79d3..3d3a2dc32974 100644
--- a/lang/p5-Tcl/Makefile
+++ b/lang/p5-Tcl/Makefile
@@ -17,6 +17,8 @@ MAINTAINER=	ports@FreeBSD.org
 LIB_DEPENDS=	tcl82.1:${PORTSDIR}/lang/tcl82
 
 PERL_CONFIGURE=	yes
+CONFIGURE_ARGS+=	POLLUTE=1
+CONFIGURE_ENV+=	PREFIX=${PREFIX}
 WRKSRC=		${WRKDIR}/${PORTNAME}
 
 MANPREFIX=	${PREFIX}/lib/perl5/${PERL_VERSION}
diff --git a/lang/p5-Tcl/files/patch-aa b/lang/p5-Tcl/files/patch-aa
index 8a764581870e..5707b5de5145 100644
--- a/lang/p5-Tcl/files/patch-aa
+++ b/lang/p5-Tcl/files/patch-aa
@@ -6,6 +6,6 @@
      VERSION => "b2",
 -    LIBS => ["-ltcl -lm"],
 -    INC => "-I/usr/local/include -I/usr/include/tcl"
-+    LIBS => ["-L\${PREFIX}/lib -ltcl82 -lm"],
++    LIBS => ["-L$ENV{PREFIX}/lib -ltcl82 -lm"],
 +    INC => "-I\${PREFIX}/include -I\${PREFIX}/include/tcl8.2"
  );