diff --git a/math/octave-forge-octproj/Makefile b/math/octave-forge-octproj/Makefile
index 29bd722d88d04..2868adcb3383b 100644
--- a/math/octave-forge-octproj/Makefile
+++ b/math/octave-forge-octproj/Makefile
@@ -21,8 +21,6 @@ WRKSRC=		${WRKDIR}/${OCTSRC}/src
 
 USES+=		compiler:gcc-c++11-lib
 
-CPPFLAGS+=	-DACCEPT_USE_OF_DEPRECATED_PROJ_API_H=1
-
 .include "${.CURDIR}/../../Mk/bsd.octave.mk"
 
 post-patch:
diff --git a/math/octave-forge-octproj/files/patch-projwrap.h b/math/octave-forge-octproj/files/patch-projwrap.h
deleted file mode 100644
index c56dc1f24c259..0000000000000
--- a/math/octave-forge-octproj/files/patch-projwrap.h
+++ /dev/null
@@ -1,10 +0,0 @@
---- projwrap.h.orig	2020-05-07 16:41:54 UTC
-+++ projwrap.h
-@@ -24,6 +24,7 @@ or http://www.gnu.org
- #include<stdio.h>
- #include<stdlib.h>
- #include<math.h>
-+#undef ACCEPT_USE_OF_DEPRECATED_PROJ_API_H
- #include<proj.h>
- /******************************************************************************/
- /******************************************************************************/