diff --git a/Marlin/src/HAL/SAMD51/HAL.h b/Marlin/src/HAL/SAMD51/HAL.h
index e9d4a70c3f..a88ed9ba79 100644
--- a/Marlin/src/HAL/SAMD51/HAL.h
+++ b/Marlin/src/HAL/SAMD51/HAL.h
@@ -186,7 +186,7 @@ public:
   static void adc_init();
 
   // Called by Temperature::init for each sensor at startup
-  static void adc_enable(const uint8_t ch);
+  static inline void adc_enable(const uint8_t ch) {}
 
   // Begin ADC sampling on the given channel
   static void adc_start(const pin_t pin);
diff --git a/Marlin/src/HAL/STM32/HAL_SPI.cpp b/Marlin/src/HAL/STM32/HAL_SPI.cpp
index 7737245de8..40d320d5e8 100644
--- a/Marlin/src/HAL/STM32/HAL_SPI.cpp
+++ b/Marlin/src/HAL/STM32/HAL_SPI.cpp
@@ -104,7 +104,7 @@ static SPISettings spiConfig;
   uint8_t spiRec() {
     hal.isr_off();                                                // No interrupts during byte receive
     const uint8_t data = HAL_SPI_STM32_SpiTransfer_Mode_3(0xFF);
-    hal.isr_off();                                                // Enable interrupts
+    hal.isr_on();                                                 // Enable interrupts
     return data;
   }
 
diff --git a/Marlin/src/HAL/STM32F1/HAL.h b/Marlin/src/HAL/STM32F1/HAL.h
index bdbf4a1885..9b973c3ea4 100644
--- a/Marlin/src/HAL/STM32F1/HAL.h
+++ b/Marlin/src/HAL/STM32F1/HAL.h
@@ -280,7 +280,7 @@ public:
   static void adc_init();
 
   // Called by Temperature::init for each sensor at startup
-  static void adc_enable(const pin_t pin);
+  static inline void adc_enable(const pin_t pin) { pinMode(pin, INPUT_ANALOG); }
 
   // Begin ADC sampling on the given channel
   static void adc_start(const pin_t pin);
diff --git a/Marlin/src/HAL/TEENSY31_32/HAL.h b/Marlin/src/HAL/TEENSY31_32/HAL.h
index 0661b55f53..14f463708b 100644
--- a/Marlin/src/HAL/TEENSY31_32/HAL.h
+++ b/Marlin/src/HAL/TEENSY31_32/HAL.h
@@ -163,7 +163,7 @@ public:
   static void adc_init();
 
   // Called by Temperature::init for each sensor at startup
-  static void adc_enable(const pin_t ch);
+  static inline void adc_enable(const pin_t ch) {}
 
   // Begin ADC sampling on the given channel
   static void adc_start(const pin_t ch);
diff --git a/Marlin/src/HAL/TEENSY40_41/HAL.h b/Marlin/src/HAL/TEENSY40_41/HAL.h
index 7bad143179..b7a8070281 100644
--- a/Marlin/src/HAL/TEENSY40_41/HAL.h
+++ b/Marlin/src/HAL/TEENSY40_41/HAL.h
@@ -192,7 +192,7 @@ public:
   static void adc_init();
 
   // Called by Temperature::init for each sensor at startup
-  static void adc_enable(const pin_t pin);
+  static inline void adc_enable(const pin_t pin) {}
 
   // Begin ADC sampling on the given channel
   static void adc_start(const pin_t pin);