diff --git a/configure/os/CONFIG.Common.solaris-sparc b/configure/os/CONFIG.Common.solaris-sparc
index 8bd7189e8..7dc50cc19 100644
--- a/configure/os/CONFIG.Common.solaris-sparc
+++ b/configure/os/CONFIG.Common.solaris-sparc
@@ -20,9 +20,9 @@ COMPILER_LDFLAGS += -mt
 
 SOLARIS_VERSION = $(subst 5.,,$(shell uname -r))
 
-POSIX_CPPFLAGS += -D_POSIX_C_SOURCE=199506L $(POSIX_CPPFLAGS_YES_$(SOLARIS_VERSION))
+POSIX_CPPFLAGS += -D_POSIX_C_SOURCE=199506L $(POSIX_CPPFLAGS_$(SOLARIS_VERSION))
 POSIX_CPPFLAGS += -D_XOPEN_SOURCE=500
-POSIX_LDLIBS += -lposix4 -lpthread $(POSIX_LDLIBS_YES_$(SOLARIS_VERSION))
+POSIX_LDLIBS += -lposix4 -lpthread $(POSIX_LDLIBS_$(SOLARIS_VERSION))
 
 OP_SYS_CPPFLAGS += -DSOLARIS=$(SOLARIS_VERSION) $(COMPILER_CPPFLAGS)
 OP_SYS_LDFLAGS +=  $(COMPILER_LDFLAGS)