diff --git a/EXRAIL2.cpp b/EXRAIL2.cpp
index cc3269b..8a2eadf 100644
--- a/EXRAIL2.cpp
+++ b/EXRAIL2.cpp
@@ -333,13 +333,15 @@ if (compileFeatures & FEATURE_SIGNAL) {
 }
 
 void RMFT2::setTurnoutHiddenState(Turnout * t) {
-  // turnout descriptions are in low flash F strings 
-  t->setHidden(GETFLASH(getTurnoutDescription(t->getId()))==0x01);     
+  // turnout descriptions are in low flash F strings
+  const FSH *desc = getTurnoutDescription(t->getId());
+  if (desc) t->setHidden(GETFLASH(desc)==0x01);
 }
 
 #ifndef IO_NO_HAL
 void RMFT2::setTurntableHiddenState(Turntable * tto) {
-  tto->setHidden(GETFLASH(getTurntableDescription(tto->getId()))==0x01);
+  const FSH *desc = getTurntableDescription(tto->getId());
+  if (desc) tto->setHidden(GETFLASH(desc)==0x01);
 }
 #endif
 
diff --git a/EXRAIL2Parser.cpp b/EXRAIL2Parser.cpp
index b049699..d231342 100644
--- a/EXRAIL2Parser.cpp
+++ b/EXRAIL2Parser.cpp
@@ -134,7 +134,7 @@ void RMFT2::ComandFilter(Print * stream, byte & opcode, byte & paramCount, int16
               return; 
             }
             if (paramCount==2) {  // <JA id>
-              uint16_t id=p[1]; 
+              int16_t id=p[1];
               StringFormatter::send(stream,F("<jA %d %c \"%S\">\n"), 
                 id, getRouteType(id), getRouteDescription(id));
               
diff --git a/GITHUB_SHA.h b/GITHUB_SHA.h
index 1cc285a..a53b57a 100644
--- a/GITHUB_SHA.h
+++ b/GITHUB_SHA.h
@@ -1 +1 @@
-#define GITHUB_SHA "devel-202401081219Z"
+#define GITHUB_SHA "devel-202401100719Z"
diff --git a/version.h b/version.h
index ee50594..909d56b 100644
--- a/version.h
+++ b/version.h
@@ -3,7 +3,8 @@
 
 #include "StringFormatter.h"
 
-#define VERSION "5.2.21ethCdf"
+#define VERSION "5.2.22ethCdf"
+// 5.2.22 - Bugfixes: Empty turnout descriptions ok; negative route numbers valid.
 // 5.2.21 - Add STARTUP_DELAY config option to delay CS bootup
 // 5.2.20 - Check return of Ethernet.begin()
 // 5.2.19 - ESP32: Determine if the RMT hardware can handle DCC