diff --git a/configure/os/CONFIG.solaris-sparc.solaris-sparc b/configure/os/CONFIG.solaris-sparc.solaris-sparc
index f1c237c8c..7c4b5c7df 100644
--- a/configure/os/CONFIG.solaris-sparc.solaris-sparc
+++ b/configure/os/CONFIG.solaris-sparc.solaris-sparc
@@ -52,7 +52,7 @@ STATIC_LDFLAGS_NO=
 STATIC_LDLIBS_YES= -Bdynamic
 STATIC_LDLIBS_NO=
 
-SHRLIB_CFLAGS += -KPIC
+SHRLIB_CFLAGS = -KPIC
 SHRLIB_LDFLAGS += -z defs -G -h $@ -z text
 LOADABLE_SHRLIB_LDFLAGS += -G -h $@ -z text