diff --git a/gnu/lib/libgcc/Makefile b/gnu/lib/libgcc/Makefile
index ad042fd1698f..f3166e78a9b5 100644
--- a/gnu/lib/libgcc/Makefile
+++ b/gnu/lib/libgcc/Makefile
@@ -81,7 +81,8 @@ LIB2ADDEH = gcc_personality_v0.c \
 	UnwindLevel1-gcc-ext.c \
 	UnwindLevel1.c \
 	UnwindRegistersRestore.S \
-	UnwindRegistersSave.S
+	UnwindRegistersSave.S \
+	libunwind.cpp
 
 CFLAGS+=	-I${UNWINDINCDIR} -I${.CURDIR}
 .if empty(CXXFLAGS:M-std=*)