diff --git a/control/zone.hpp b/control/zone.hpp
index bdde64a..dc5771c 100644
--- a/control/zone.hpp
+++ b/control/zone.hpp
@@ -208,6 +208,12 @@
         void requestSpeedDecrease(uint64_t targetDelta);
 
         /**
+         * @brief Callback function for the increase timer that delays
+         * processing of requested speed increases while fans are increasing
+         */
+        void incTimerExpired();
+
+        /**
          * @brief Callback function for the decrease timer that processes any
          * requested speed decreases if allowed
          */
@@ -276,6 +282,11 @@
         uint64_t _decSpeedDelta = 0;
 
         /**
+         * The increase timer object
+         */
+        phosphor::fan::util::Timer _incTimer;
+
+        /**
          * The decrease timer object
          */
         phosphor::fan::util::Timer _decTimer;