diff --git a/plugins/samplemimo/audiocatsiso/audiocatsisohamlib.cpp b/plugins/samplemimo/audiocatsiso/audiocatsisohamlib.cpp
index 5c9e7734c..09c228c4b 100644
--- a/plugins/samplemimo/audiocatsiso/audiocatsisohamlib.cpp
+++ b/plugins/samplemimo/audiocatsiso/audiocatsisohamlib.cpp
@@ -17,7 +17,6 @@
 // along with this program. If not, see <http://www.gnu.org/licenses/>.          //
 ///////////////////////////////////////////////////////////////////////////////////
 
-#include <hamlib/rig.h>
 #include "audiocatsisohamlib.h"
 
 AudioCATSISOHamlib::AudioCATSISOHamlib()
@@ -31,7 +30,7 @@ AudioCATSISOHamlib::~AudioCATSISOHamlib()
 {
 }
 
-int AudioCATSISOHamlib::hash_model_list(const struct rig_caps *caps, void *data)
+int AudioCATSISOHamlib::hash_model_list(HAMLIB_RIG_CAPS *caps, void *data)
 {
     AudioCATSISOHamlib *hamlibHandler = (AudioCATSISOHamlib*) data;
     hamlibHandler->m_rigModels[caps->rig_model] = caps->model_name;
diff --git a/plugins/samplemimo/audiocatsiso/audiocatsisohamlib.h b/plugins/samplemimo/audiocatsiso/audiocatsisohamlib.h
index 4faf0992b..a1728a917 100644
--- a/plugins/samplemimo/audiocatsiso/audiocatsisohamlib.h
+++ b/plugins/samplemimo/audiocatsiso/audiocatsisohamlib.h
@@ -21,8 +21,19 @@
 #define _AUDIOCATSISO_AUDIOCATSISOHAMLIB_H_
 
 #include <QMap>
+#include <hamlib/rig.h>
 
-struct rig_caps;
+#ifdef RIGCAPS_NOT_CONST
+
+  /* Since this commit:
+   *   https://github.com/Hamlib/Hamlib/commit/ed941939359da9f8734dbdf4a21a9b01622a1a6e
+   * a 'struct rig_caps' is no longer constant (as passed to 'rig_list_foreach()' etc.).
+   */
+
+  #define HAMLIB_RIG_CAPS struct rig_caps
+#else
+  #define HAMLIB_RIG_CAPS const struct rig_caps
+#endif
 
 class AudioCATSISOHamlib
 {
@@ -36,7 +47,7 @@ public:
 private:
     QMap<uint32_t, QString> m_rigModels;
     QMap<QString, uint32_t> m_rigNames;
-    static int hash_model_list(const struct rig_caps *caps, void *data);
+    static int hash_model_list(HAMLIB_RIG_CAPS *caps, void *data);
 };