diff --git a/ion/src/f730/device.cpp b/ion/src/f730/device.cpp
index d53097d9f..6ab3e8707 100644
--- a/ion/src/f730/device.cpp
+++ b/ion/src/f730/device.cpp
@@ -321,9 +321,6 @@ void initClocks() {
   class RCC::APB2ENR apb2enr(0); // Reset value
   apb2enr.setADC1EN(true);
   apb2enr.setSYSCFGEN(true);
-#if USE_SD_CARD
-  apb2enr.setSDIOEN(true);
-#endif
   RCC.APB2ENR()->set(apb2enr);
 }
 
diff --git a/ion/src/f730/regs/rcc.h b/ion/src/f730/regs/rcc.h
index 3306c0b07..576dea281 100644
--- a/ion/src/f730/regs/rcc.h
+++ b/ion/src/f730/regs/rcc.h
@@ -103,7 +103,7 @@ public:
     REGS_BOOL_FIELD(TIM1EN, 0);
     REGS_BOOL_FIELD(USART1EN, 4);
     REGS_BOOL_FIELD(ADC1EN, 8);
-    REGS_BOOL_FIELD(SDIOEN, 11);
+    REGS_BOOL_FIELD(SDMMC1EN, 11);
     REGS_BOOL_FIELD(SPI1EN, 12);
     REGS_BOOL_FIELD(SYSCFGEN, 14);
   };