diff --git a/embassy-stm32/src/timer/simple_pwm.rs b/embassy-stm32/src/timer/simple_pwm.rs
index 709278c0c..ba089ac8b 100644
--- a/embassy-stm32/src/timer/simple_pwm.rs
+++ b/embassy-stm32/src/timer/simple_pwm.rs
@@ -245,7 +245,8 @@ macro_rules! impl_waveform_chx {
                 let original_cc_dma_on_update = self.inner.get_cc_dma_selection() == Ccds::ONUPDATE;
                 let original_cc_dma_enabled = self.inner.get_cc_dma_enable_state(cc_channel);
 
-                if original_cc_dma_on_update {
+                // redirect CC DMA request onto Update Event
+                if !original_cc_dma_on_update {
                     self.inner.set_cc_dma_selection(Ccds::ONUPDATE)
                 }