diff --git a/lib/Makefile.mingw b/lib/Makefile.mingw
index 6be188dce7..6ddf11a51e 100644
--- a/lib/Makefile.mingw
+++ b/lib/Makefile.mingw
@@ -30,6 +30,7 @@ HEADERS = $(BOINC_SRC)/version.h \
 	$(BOINC_SRC)/lib/coproc.h \
 	$(BOINC_SRC)/lib/cal_boinc.h \
 	$(BOINC_SRC)/lib/cl_boinc.h \
+	$(BOINC_SRC)/lib/opencl_boinc.h \
 	$(BOINC_SRC)/svn_version.h \
 	$(BOINC_SRC)/win_build/config.h \
 	$(BOINC_SRC)/lib/str_util.h