diff --git a/src/spicelib/devices/isrc/isrcdefs.h b/src/spicelib/devices/isrc/isrcdefs.h
index 70978136e..7564dfeda 100644
--- a/src/spicelib/devices/isrc/isrcdefs.h
+++ b/src/spicelib/devices/isrc/isrcdefs.h
@@ -127,7 +127,9 @@ enum {
     ISRC_D_F2,
     ISRC_VOLTS,
     ISRC_AM,
+#ifdef XSPICE
     ISRC_CURRENT,
+#endif
 };
 
 enum {