diff --git a/rigs/aor/ar7030p.c b/rigs/aor/ar7030p.c
index 2f1bbf26f..7d51e4d3a 100644
--- a/rigs/aor/ar7030p.c
+++ b/rigs/aor/ar7030p.c
@@ -1264,7 +1264,6 @@ static int ar7030p_set_vfo(RIG *rig, vfo_t vfo)
 static int ar7030p_get_vfo(RIG *rig, vfo_t *vfo)
 {
     int rc = RIG_OK;
-        // cppcheck-suppress constVariablePointer
     struct ar7030p_priv_data *priv = (struct ar7030p_priv_data *) rig->state.priv;
 
     assert(NULL != vfo);
@@ -1349,7 +1348,6 @@ static int ar7030p_get_mem(RIG *rig, vfo_t vfo, int *ch)
 {
     int rc = RIG_OK;
 
-        // cppcheck-suppress constVariablePointer
     struct ar7030p_priv_data *priv = (struct ar7030p_priv_data *) rig->state.priv;
     const channel_t *curr = priv->curr;
 
diff --git a/rigs/kit/usrp_impl.cc b/rigs/kit/usrp_impl.cc
index d193f91e7..646552215 100644
--- a/rigs/kit/usrp_impl.cc
+++ b/rigs/kit/usrp_impl.cc
@@ -85,6 +85,12 @@ int usrp_close(RIG *rig)
 {
 	struct usrp_priv_data *priv = static_cast<struct usrp_priv_data*>rig->state.priv;
 
+    if (!priv)
+    {
+        rig_debug(RIG_DEBUG_ERR, "%s: priv == NULL?\n", __func__);
+        return -RIG_EARG;
+    }
+
 	delete priv->urx;
 
 	return RIG_OK;
@@ -97,6 +103,12 @@ int usrp_set_conf(RIG *rig, token_t token, const char *val)
 {
 	struct usrp_priv_data *priv = static_cast<struct usrp_priv_data*>rig->state.priv;
 
+    if (!priv)
+    {
+        rig_debug(RIG_DEBUG_ERR, "%s: priv == NULL?\n", __func__);
+        return -RIG_EARG;
+    }
+
 	switch(token) {
 		case TOK_IFMIXFREQ:
 			sscanf(val, "%"SCNfreq, &priv->if_mix_freq);
@@ -116,6 +128,12 @@ int usrp_get_conf(RIG *rig, token_t token, char *val)
 {
 	const struct usrp_priv_data *priv = static_cast<struct usrp_priv_data*>rig->state.priv;
 
+    if (!priv)
+    {
+        rig_debug(RIG_DEBUG_ERR, "%s: priv == NULL?\n", __func__);
+        return -RIG_EARG;
+    }
+
 	switch(token) {
 		case TOK_IFMIXFREQ:
 			sprintf(val, "%"PRIfreq, priv->if_mix_freq);
@@ -133,6 +151,12 @@ int usrp_set_freq(RIG *rig, vfo_t vfo, freq_t freq)
 	const struct usrp_priv_data *priv = static_cast<struct usrp_priv_data*>rig->state.priv;
 	int chan = 0;
 
+    if (!priv)
+    {
+        rig_debug(RIG_DEBUG_ERR, "%s: priv == NULL?\n", __func__);
+        return -RIG_EARG;
+    }
+
 	if (!priv->urx->set_rx_freq (chan, freq))
 		return -RIG_EPROTO;
 
@@ -145,6 +169,12 @@ int usrp_get_freq(RIG *rig, vfo_t vfo, freq_t *freq)
 	const struct usrp_priv_data *priv = static_cast<struct usrp_priv_data*>rig->state.priv;
 	int chan = 0;
 
+    if (!priv)
+    {
+        rig_debug(RIG_DEBUG_ERR, "%s: priv == NULL?\n", __func__);
+        return -RIG_EARG;
+    }
+
 	*freq = priv->urx->rx_freq (chan);
 
 	return RIG_OK;
diff --git a/rotators/easycomm/easycomm.c b/rotators/easycomm/easycomm.c
index d806c3d23..af3a9ae69 100644
--- a/rotators/easycomm/easycomm.c
+++ b/rotators/easycomm/easycomm.c
@@ -361,6 +361,7 @@ static int easycomm_rot_set_level(ROT *rot, setting_t level, value_t val)
  * Get Info
  * returns the model name string
  */
+// cppcheck-suppress constParameterCallback
 static const char *easycomm_rot_get_info(ROT *rot)
 {
     const struct rot_caps *rc;
diff --git a/rotators/saebrtrack/saebrtrack.c b/rotators/saebrtrack/saebrtrack.c
index d5eb16dd6..f19a266bb 100644
--- a/rotators/saebrtrack/saebrtrack.c
+++ b/rotators/saebrtrack/saebrtrack.c
@@ -120,6 +120,7 @@ saebrtrack_rot_set_position(ROT *rot, azimuth_t az, elevation_t el)
  * Get Info
  * returns the model name string
  */
+// cppcheck-suppress constParameterCallback
 static const char *saebrtrack_rot_get_info(ROT *rot)
 {
     const struct rot_caps *rc;
diff --git a/rotators/ts7400/ts7400.c b/rotators/ts7400/ts7400.c
index c76990344..68ef8f1b0 100644
--- a/rotators/ts7400/ts7400.c
+++ b/rotators/ts7400/ts7400.c
@@ -223,7 +223,7 @@ static int ts7400_rot_reset(ROT *rot, rot_reset_t reset)
 
 static int ts7400_rot_move(ROT *rot, int direction, int speed)
 {
-    const struct ts7400_rot_priv_data *priv = (struct ts7400_rot_priv_data *)
+    struct ts7400_rot_priv_data const *priv = (struct ts7400_rot_priv_data *)
                                         rot->state.priv;
 
     rig_debug(RIG_DEBUG_VERBOSE, "%s called\n", __func__);
diff --git a/scripts/MSVC/2022/x86/hamlibTest/hamlibTest.h b/scripts/MSVC/2022/x86/hamlibTest/hamlibTest.h
index e60f2eb7e..06a16d323 100644
--- a/scripts/MSVC/2022/x86/hamlibTest/hamlibTest.h
+++ b/scripts/MSVC/2022/x86/hamlibTest/hamlibTest.h
@@ -1,3 +1,3 @@
 #pragma once
 
-#include "resource.h"
+#include "Resource.h"
diff --git a/tests/rotctl.c b/tests/rotctl.c
index 70504a5e0..3a680719c 100644
--- a/tests/rotctl.c
+++ b/tests/rotctl.c
@@ -415,6 +415,7 @@ int main(int argc, char *argv[])
 
 #ifdef HAVE_LIBREADLINE
 
+    // cppcheck-suppress knownConditionTrueFalse
     if (interactive && prompt && have_rl)
     {
         rl_readline_name = "rotctl";
@@ -470,6 +471,7 @@ int main(int argc, char *argv[])
             exitcode = 2;
         }
     }
+    // cppcheck-suppress knownConditionTrueFalse
     while (retcode == 0 || retcode == 2);
 
 #ifdef HAVE_LIBREADLINE
diff --git a/tests/rotctl_parse.c b/tests/rotctl_parse.c
index 15b0724ce..3f3cf0e95 100644
--- a/tests/rotctl_parse.c
+++ b/tests/rotctl_parse.c
@@ -1474,6 +1474,7 @@ int rotctl_parse(ROT *my_rot, FILE *fin, FILE *fout, const char *argv[], int arg
             rot_debug(RIG_DEBUG_TRACE, "%s: NETROTCTL_RET %d\n", __func__, retcode);
             fprintf(fout, NETROTCTL_RET "%d\n", retcode);
             // ext_resp = 0; // not used ?
+            // cppcheck-suppress unreadVariable
             resp_sep = '\n';
         }
         else
@@ -1501,6 +1502,7 @@ int rotctl_parse(ROT *my_rot, FILE *fin, FILE *fout, const char *argv[], int arg
             {
                 rot_debug(RIG_DEBUG_TRACE, "%s: NETROTCTL_RET 0\n", __func__);
                 fprintf(fout, NETROTCTL_RET "0\n");
+                // cppcheck-suppress unreadVariable
                 resp_sep = '\n';
             }
         }
diff --git a/tests/rotctld.c b/tests/rotctld.c
index 186748b3a..f3c5e2f41 100644
--- a/tests/rotctld.c
+++ b/tests/rotctld.c
@@ -621,6 +621,7 @@ int main(int argc, char *argv[])
 
 #else
         handle_socket(arg);
+        retcode = 1;
 #endif
     }