diff --git a/src/sinqController.cpp b/src/sinqController.cpp
index 45688a9..03f4324 100644
--- a/src/sinqController.cpp
+++ b/src/sinqController.cpp
@@ -439,10 +439,12 @@ asynStatus sinqController::writeInt32(asynUser *pasynUser, epicsInt32 value) {
 
     sinqAxis *axis = getSinqAxis(pasynUser);
     if (axis == nullptr) {
+        int axisNo;
+        getAddress(pasynUser, &axisNo);
         asynPrint(this->pasynUserSelf, ASYN_TRACE_ERROR,
                   "Controller \"%s\", axis %d => %s, line %d:\nAxis is not an "
                   "instance of sinqAxis",
-                  portName, axis->axisNo(), __PRETTY_FUNCTION__, __LINE__);
+                  portName, axisNo, __PRETTY_FUNCTION__, __LINE__);
         return asynError;
     }
 
@@ -462,10 +464,12 @@ asynStatus sinqController::readInt32(asynUser *pasynUser, epicsInt32 *value) {
 
     sinqAxis *axis = getSinqAxis(pasynUser);
     if (axis == nullptr) {
+        int axisNo;
+        getAddress(pasynUser, &axisNo);
         asynPrint(this->pasynUserSelf, ASYN_TRACE_ERROR,
                   "Controller \"%s\", axis %d => %s, line %d:\nAxis is not an "
                   "instance of sinqAxis",
-                  portName, axis->axisNo(), __PRETTY_FUNCTION__, __LINE__);
+                  portName, axisNo, __PRETTY_FUNCTION__, __LINE__);
         return asynError;
     }
 
@@ -495,7 +499,7 @@ asynStatus sinqController::couldNotParseResponse(const char *command,
         asynPrint(this->pasynUserSelf, ASYN_TRACE_ERROR,
                   "Controller \"%s\", axis %d => %s, line %d:\nAxis is not an "
                   "instance of sinqAxis",
-                  portName, axis->axisNo(), __PRETTY_FUNCTION__, __LINE__);
+                  portName, axisNo, __PRETTY_FUNCTION__, __LINE__);
         return asynError;
     }