diff --git a/lang/fpc-units/Makefile b/lang/fpc-units/Makefile
index 4d12a1904b08..aeecb62230b8 100644
--- a/lang/fpc-units/Makefile
+++ b/lang/fpc-units/Makefile
@@ -25,8 +25,8 @@ ALL_OPTIONS=	A52 ASPELL BZIP2 CAIRO CHM DBLIB DBUS DTS FASTCGI \
 		RTL_EXTRA RTL_OBJPAS RTL_UNICODE SDL SVGALIB SYMBOLIC \
 		SYSLOG TCL UNZIP USERS UTMP UUID X11 XFORMS ZLIB
 
-OPTIONS_DEFINE=		${ALL_OPTIONS} BFD
-OPTIONS_DEFAULT=	${ALL_OPTIONS}
+OPTIONS_DEFINE:=	${ALL_OPTIONS} BFD
+OPTIONS_DEFAULT:=	${ALL_OPTIONS}
 
 A52_DESC=		Interface to a52 library
 ASPELL_DESC=		Interface to aspell spelling checker