diff --git a/radio/src/targets/horus/telemetry_driver.cpp b/radio/src/targets/horus/telemetry_driver.cpp
index baf41346f..eb886246f 100644
--- a/radio/src/targets/horus/telemetry_driver.cpp
+++ b/radio/src/targets/horus/telemetry_driver.cpp
@@ -343,7 +343,11 @@ extern "C" void TELEMETRY_DMA_TX_IRQHandler(void)
   DEBUG_INTERRUPT(INT_TELEM_DMA);
   if (DMA_GetITStatus(TELEMETRY_DMA_Stream_TX, TELEMETRY_DMA_TX_FLAG_TC)) {
     DMA_ClearITPendingBit(TELEMETRY_DMA_Stream_TX, TELEMETRY_DMA_TX_FLAG_TC);
+
+    // clear TC flag before enabling interrupt
+    TELEMETRY_USART->SR &= ~USART_SR_TC;
     TELEMETRY_USART->CR1 |= USART_CR1_TCIE;
+
     if (telemetryProtocol == PROTOCOL_TELEMETRY_FRSKY_SPORT) {
       outputTelemetryBuffer.reset();
     }
diff --git a/radio/src/targets/nv14/telemetry_driver.cpp b/radio/src/targets/nv14/telemetry_driver.cpp
index d2fa496ed..89d3b81d6 100644
--- a/radio/src/targets/nv14/telemetry_driver.cpp
+++ b/radio/src/targets/nv14/telemetry_driver.cpp
@@ -166,7 +166,11 @@ extern "C" void TELEMETRY_DMA_TX_IRQHandler(void)
   DEBUG_INTERRUPT(INT_TELEM_DMA);
   if (DMA_GetITStatus(TELEMETRY_DMA_Stream_TX, TELEMETRY_DMA_TX_FLAG_TC)) {
     DMA_ClearITPendingBit(TELEMETRY_DMA_Stream_TX, TELEMETRY_DMA_TX_FLAG_TC);
+
+    // clear TC flag before enabling interrupt
+    TELEMETRY_USART->SR &= ~USART_SR_TC;
     TELEMETRY_USART->CR1 |= USART_CR1_TCIE;
+
     if (telemetryProtocol == PROTOCOL_TELEMETRY_FRSKY_SPORT) {
       outputTelemetryBuffer.reset();
     }
diff --git a/radio/src/targets/taranis/telemetry_driver.cpp b/radio/src/targets/taranis/telemetry_driver.cpp
index c888aa79a..8ffb3c1ce 100644
--- a/radio/src/targets/taranis/telemetry_driver.cpp
+++ b/radio/src/targets/taranis/telemetry_driver.cpp
@@ -314,7 +314,11 @@ extern "C" void TELEMETRY_DMA_TX_IRQHandler(void)
   DEBUG_INTERRUPT(INT_TELEM_DMA);
   if (DMA_GetITStatus(TELEMETRY_DMA_Stream_TX, TELEMETRY_DMA_TX_FLAG_TC)) {
     DMA_ClearITPendingBit(TELEMETRY_DMA_Stream_TX, TELEMETRY_DMA_TX_FLAG_TC);
+
+    // clear TC flag before enabling interrupt
+    TELEMETRY_USART->SR &= ~USART_SR_TC;
     TELEMETRY_USART->CR1 |= USART_CR1_TCIE;
+
     if (telemetryProtocol == PROTOCOL_TELEMETRY_FRSKY_SPORT) {
       outputTelemetryBuffer.reset();
     }