diff --git a/src/turboPmacController.cpp b/src/turboPmacController.cpp
index 0cf65b7..068e152 100644
--- a/src/turboPmacController.cpp
+++ b/src/turboPmacController.cpp
@@ -399,11 +399,23 @@ asynStatus turboPmacController::writeRead(int axisNo, const char *command,
                 command, getMsgPrintControl().getSuffix());
         }
 
+        /*
+        The literal part of the message below is 113 bytes long. Cap the two
+        embedded strings (constexpr precision) so that the message always fits
+        into drvMessageText (MAXBUF_ bytes), otherwise the
+        -Wformat-truncation check would be triggered.
+        */
+        constexpr size_t msgLiteralLen =
+            sizeof("Received unexpected response '' (carriage returns are "
+                   "replaced with spaces) for command . Please call the "
+                   "support") -
+            1;
+        constexpr size_t msgArgLen = (MAXBUF_ - msgLiteralLen - 1) / 2;
         snprintf(drvMessageText, sizeof(drvMessageText),
-                 "Received unexpected response '%s' (carriage returns "
-                 "are replaced with spaces) for command %s. "
-                 "Please call the support",
-                 modResponse, command);
+                 "Received unexpected response '%.*s' (carriage returns "
+                 "are replaced with spaces) for command %.*s. Please call "
+                 "the support",
+                 (int)msgArgLen, modResponse, (int)msgArgLen, command);
         status = asynError;
     } else {
         getMsgPrintControl().resetCount(numResponsesKey, pasynUser());