diff --git a/firmware/application/clock_manager.cpp b/firmware/application/clock_manager.cpp
index e674b067b..e6c4d242f 100644
--- a/firmware/application/clock_manager.cpp
+++ b/firmware/application/clock_manager.cpp
@@ -398,6 +398,7 @@ void ClockManager::change_clock_configuration(const cgu::CLK_SEL clk_sel) {
 
 	/* If not using PLL1, disable clock feeding GP_CLKIN */
 	if( clk_sel != cgu::CLK_SEL::PLL1 ) {
+		stop_audio_pll();
 		disable_gp_clkin_source();
 	}
 }