diff --git a/usr.bin/gh-bc/Makefile b/usr.bin/gh-bc/Makefile
index e5f68b704d79..213559478b88 100644
--- a/usr.bin/gh-bc/Makefile
+++ b/usr.bin/gh-bc/Makefile
@@ -62,8 +62,8 @@ MAN_SRC_BC=	bc/A.1
 MAN_SRC_DC=	dc/A.1
 
 # prevent floating point incompatibilities caused by -flto on some architectures
-.if ${MACHINE_ARCH} != mips && ${MACHINE_ARCH} != mips64 && \
-    ${MACHINE_ARCH} != powerpc64 && ${MACHINE_ARCH} != riscv64
+.if ${MACHINE_ARCH:Mmips*} == "" && ${MACHINE_ARCH} != powerpc64 && \
+	${MACHINE_ARCH} != riscv64
 CFLAGS+=	-flto
 .endif