diff --git a/sysmoOCTSIM/config/peripheral_clk_config.h b/sysmoOCTSIM/config/peripheral_clk_config.h
index 4bff6ff..2ae1f63 100644
--- a/sysmoOCTSIM/config/peripheral_clk_config.h
+++ b/sysmoOCTSIM/config/peripheral_clk_config.h
@@ -641,7 +641,7 @@
  * \brief SERCOM7's Core Clock frequency
  */
 #ifndef CONF_GCLK_SERCOM7_CORE_FREQUENCY
-#define CONF_GCLK_SERCOM7_CORE_FREQUENCY 100000000
+#define CONF_GCLK_SERCOM7_CORE_FREQUENCY 50000000
 #endif
 
 /**