diff --git a/radio/src/gui/128x64/model_setup.cpp b/radio/src/gui/128x64/model_setup.cpp
index 7c41a1471..c0edddb8c 100644
--- a/radio/src/gui/128x64/model_setup.cpp
+++ b/radio/src/gui/128x64/model_setup.cpp
@@ -864,6 +864,8 @@ void menuModelSetup(event_t event)
                 g_model.moduleData[EXTERNAL_MODULE].channelsCount = DEFAULT_CHANNELS(EXTERNAL_MODULE);
                 if (IS_MODULE_SBUS(EXTERNAL_MODULE))
                   g_model.moduleData[EXTERNAL_MODULE].sbus.refreshRate = -31;
+                if(IS_MODULE_PPM(EXTERNAL_MODULE))
+                  SET_DEFAULT_PPM_FRAME_LENGTH(EXTERNAL_MODULE);
               }
               break;
             case 1:
diff --git a/radio/src/gui/212x64/model_setup.cpp b/radio/src/gui/212x64/model_setup.cpp
index 627b63012..cd13d56a8 100644
--- a/radio/src/gui/212x64/model_setup.cpp
+++ b/radio/src/gui/212x64/model_setup.cpp
@@ -764,6 +764,8 @@ void menuModelSetup(event_t event)
                 g_model.moduleData[EXTERNAL_MODULE].channelsCount = DEFAULT_CHANNELS(EXTERNAL_MODULE);
                 if (IS_MODULE_SBUS(EXTERNAL_MODULE))
                   g_model.moduleData[EXTERNAL_MODULE].sbus.refreshRate = -31;
+                if(IS_MODULE_PPM(EXTERNAL_MODULE))
+                  SET_DEFAULT_PPM_FRAME_LENGTH(EXTERNAL_MODULE);
               }
               break;
             case 1:
diff --git a/radio/src/gui/480x272/model_setup.cpp b/radio/src/gui/480x272/model_setup.cpp
index 4fb1752a5..a360c08b9 100644
--- a/radio/src/gui/480x272/model_setup.cpp
+++ b/radio/src/gui/480x272/model_setup.cpp
@@ -721,6 +721,8 @@ bool menuModelSetup(event_t event)
                 g_model.moduleData[EXTERNAL_MODULE].channelsCount = DEFAULT_CHANNELS(EXTERNAL_MODULE);
                 if (IS_MODULE_SBUS(EXTERNAL_MODULE))
                   g_model.moduleData[EXTERNAL_MODULE].sbus.refreshRate = -31;
+                if(IS_MODULE_PPM(EXTERNAL_MODULE))
+                  SET_DEFAULT_PPM_FRAME_LENGTH(EXTERNAL_MODULE);
               }
               break;
             case 1: