Index: databases/grass7/Makefile
===================================================================
--- databases/grass7/Makefile
+++ databases/grass7/Makefile
@@ -126,7 +126,13 @@
 ZSTD_CONFIGURE_WITH=	zstd
 ZSTD_LIB_DEPENDS=	libzstd.so:archivers/zstd
 
-.include <bsd.port.options.mk>
+.include <bsd.port.pre.mk>
+
+.if ${ARCH} == "aarch64" || ${ARCH} == "riscv64"
+PLIST_SUB+=     WOSBRK="@comment "
+.else
+PLIST_SUB+=     WOSBRK=""
+.endif
 
 .if !defined (GRASS_INST_DIR)
 GRASS_INST_DIR=	${PORTNAME}${VER}
Index: databases/grass7/pkg-plist
===================================================================
--- databases/grass7/pkg-plist
+++ databases/grass7/pkg-plist
@@ -240,7 +240,7 @@
 %%GRASS_INST_DIR%%/bin/r.surf.gauss
 %%GRASS_INST_DIR%%/bin/r.surf.idw
 %%GRASS_INST_DIR%%/bin/r.surf.random
-%%GRASS_INST_DIR%%/bin/r.terraflow
+%%WOSBRK%%%%GRASS_INST_DIR%%/bin/r.terraflow
 %%GRASS_INST_DIR%%/bin/r.texture
 %%GRASS_INST_DIR%%/bin/r.thin
 %%GRASS_INST_DIR%%/bin/r.tile