diff --git a/cde/lib/DtSvc/DtUtil1/DtsInit.c b/cde/lib/DtSvc/DtUtil1/DtsInit.c
index 352969f5d..151df1d21 100644
--- a/cde/lib/DtSvc/DtUtil1/DtsInit.c
+++ b/cde/lib/DtSvc/DtUtil1/DtsInit.c
@@ -73,7 +73,9 @@
 #include <Dt/Dts.h>
 #include "DtSvcLock.h"
 
+#if !defined(linux)
 extern char	*strdup(const char *);
+#endif
 
 static int      cur_dc_count = 0;
 static int      cur_da_count = 0;
diff --git a/cde/lib/DtSvc/DtUtil1/DtsSort.c b/cde/lib/DtSvc/DtUtil1/DtsSort.c
index c8297ef99..e912659cf 100644
--- a/cde/lib/DtSvc/DtUtil1/DtsSort.c
+++ b/cde/lib/DtSvc/DtUtil1/DtsSort.c
@@ -58,8 +58,9 @@
 #include "Dt/DtsDb.h"
 #include "Dt/Dts.h"
 
+#if !defined(linux)
 extern	char	*strdup(const char *);
-
+#endif
 
 static char *
 get_value(DtDtsDbRecord *ce_entry, char *value)