diff --git a/orte/runtime/orte_globals.c b/orte/runtime/orte_globals.c
index 031dc9d72c..0d647ffc8d 100644
--- a/orte/runtime/orte_globals.c
+++ b/orte/runtime/orte_globals.c
@@ -148,7 +148,9 @@ uint8_t orte_default_num_cores_per_socket;
 char *orte_default_cpu_set;
 char *orte_default_hostfile = NULL;
 char *orte_rankfile;
+#ifdef __WINDOWS__
 char *orte_ccp_headnode;
+#endif
 
 /* default rank assigment and binding policy */
 orte_mapping_policy_t orte_default_mapping_policy = 0;
diff --git a/orte/runtime/orte_globals.h b/orte/runtime/orte_globals.h
index 5f728d4f70..27f22c52a1 100644
--- a/orte/runtime/orte_globals.h
+++ b/orte/runtime/orte_globals.h
@@ -623,7 +623,9 @@ ORTE_DECLSPEC extern uint8_t orte_default_num_cores_per_socket;
 ORTE_DECLSPEC extern char *orte_default_cpu_set;
 ORTE_DECLSPEC extern char *orte_default_hostfile;
 ORTE_DECLSPEC extern char *orte_rankfile;
+#ifdef __WINDOWS__
 ORTE_DECLSPEC extern char *orte_ccp_headnode;
+#endif 
 
 /* default rank assigment and binding policy */
 ORTE_DECLSPEC extern orte_mapping_policy_t orte_default_mapping_policy;
diff --git a/orte/runtime/orte_mca_params.c b/orte/runtime/orte_mca_params.c
index 3536dac6b9..526d02e8cd 100644
--- a/orte/runtime/orte_mca_params.c
+++ b/orte/runtime/orte_mca_params.c
@@ -224,10 +224,12 @@ int orte_register_params(void)
     mca_base_param_reg_syn_name(tmp, "rmaps", "rank_file_path", false);
     mca_base_param_lookup_string(tmp, &orte_rankfile);
     
+#ifdef __WINDOWS__
     mca_base_param_reg_string_name("orte", "ccp_headnode",
                           "Name of the cluster head node. (For Windows CCP only.)",
                           false, false,
                           NULL, &orte_ccp_headnode);
+#endif
     
     /* whether or not to keep FQDN hostnames */
     mca_base_param_reg_int_name("orte", "keep_fqdn_hostnames",