diff --git a/maxscale-system-test/testconnections.cpp b/maxscale-system-test/testconnections.cpp
index 70380ae4f..18f71be0b 100644
--- a/maxscale-system-test/testconnections.cpp
+++ b/maxscale-system-test/testconnections.cpp
@@ -1885,6 +1885,22 @@ void TestConnections::tprintf(const char* format, ...)
     fflush(stderr);
 }
 
+void TestConnections::log_printf(const char* format, ...)
+{
+    va_list argp;
+    va_start(argp, format);
+    int n = vsnprintf(nullptr, 0, format, argp);
+    va_end(argp);
+
+    va_start(argp, format);
+    char buf[n + 1];
+    vsnprintf(buf, sizeof(buf), format, argp);
+    va_end(argp);
+
+    maxscales->ssh_node_f(0, true, "echo '--- %s ---' >> /var/log/maxscale/maxscale.log", buf);
+    tprintf("%s", buf);
+}
+
 int TestConnections::get_master_server_id(int m)
 {
     int master_id = -1;
diff --git a/maxscale-system-test/testconnections.h b/maxscale-system-test/testconnections.h
index 4157ef86f..694bb474c 100644
--- a/maxscale-system-test/testconnections.h
+++ b/maxscale-system-test/testconnections.h
@@ -505,6 +505,11 @@ public:
      */
     void tprintf(const char* format, ...);
 
+    /**
+     * @brief injects a message into maxscale.log
+     */
+    void log_printf(const char* format, ...) mxb_attribute((format(printf, 2, 3)));
+
     /**
      * @brief Creats t1 table, insert data into it and checks if data can be correctly read from all Maxscale
      * services