diff --git a/include/hamlib/rig.h b/include/hamlib/rig.h
index 4d8338a33..279671934 100644
--- a/include/hamlib/rig.h
+++ b/include/hamlib/rig.h
@@ -1934,6 +1934,7 @@ struct rig_cache {
     // Most rigs have MainA and MainB
     // Dual VFO rigs can have SubA and SubB too
     // For dual VFO rigs simplex operations are all done on MainA/MainB -- ergo this abstraction
+    freq_t freqCurr;  // VFO_CURR
     freq_t freqMainA; // VFO_A, VFO_MAIN, and VFO_MAINA
     freq_t freqMainB; // VFO_B, VFO_SUB, and VFO_MAINB
     freq_t freqMainC; // VFO_C (future MainC?)