diff --git a/motorApp/NewportSrc/drvXPSC8.cc b/motorApp/NewportSrc/drvXPSC8.cc
index c3440bf2..a1671cbf 100755
--- a/motorApp/NewportSrc/drvXPSC8.cc
+++ b/motorApp/NewportSrc/drvXPSC8.cc
@@ -11,6 +11,7 @@
  */
 
 #include        <string.h>
+#include        <stdio.h>
 #include        <epicsThread.h>
 #include        <epicsMutex.h>
 #include        <epicsExport.h>