diff --git a/c/src/lib/libbsp/sparc/leon3/make/custom/ngmp.cfg b/c/src/lib/libbsp/sparc/leon3/make/custom/ngmp.cfg
index 86da029c42..5e3d1960f2 100644
--- a/c/src/lib/libbsp/sparc/leon3/make/custom/ngmp.cfg
+++ b/c/src/lib/libbsp/sparc/leon3/make/custom/ngmp.cfg
@@ -1 +1,3 @@
 include $(RTEMS_ROOT)/make/custom/leon3.cfg
+
+CPU_CFLAGS = -mcpu=leon3 -msoft-float