diff --git a/os/hal/ports/STM32/STM32F37x/hal_lld.h b/os/hal/ports/STM32/STM32F37x/hal_lld.h
index 1da524c3c..7dbdfbf57 100644
--- a/os/hal/ports/STM32/STM32F37x/hal_lld.h
+++ b/os/hal/ports/STM32/STM32F37x/hal_lld.h
@@ -853,13 +853,16 @@
 #endif
 
 /* SDADC maximum frequency check.*/
-#if (STM32_ADC_USE_SDADC1 | STM32_ADC_USE_SDADC1 | STM32_ADC_USE_SDADC1) && \
-    (STM32_SDADCCLK > STM32_SDADCCLK_FAST_MAX)
+#if (STM32_ADC_USE_SDADC1 ||                                                \
+     STM32_ADC_USE_SDADC2 ||                                                \
+     STM32_ADC_USE_SDADC3) &&  (STM32_SDADCCLK > STM32_SDADCCLK_FAST_MAX)
 #error "STM32_SDADCCLK exceeding maximum frequency (STM32_SDADCCLK_FAST_MAX)"
 #endif
 
 /* SDADC minimum frequency check.*/
-#if (STM32_ADC_USE_SDADC1 | STM32_ADC_USE_SDADC1 | STM32_ADC_USE_SDADC1) && \
+#if (STM32_ADC_USE_SDADC1 ||                                                \
+     STM32_ADC_USE_SDADC2 ||                                                \
+     STM32_ADC_USE_SDADC3) && \
     (STM32_SDADCCLK < STM32_SDADCCLK_MIN)
 #error "STM32_SDADCCLK exceeding maximum frequency (STM32_SDADCCLK_MIN)"
 #endif
diff --git a/readme.txt b/readme.txt
index ae0a3b812..d9cceab47 100644
--- a/readme.txt
+++ b/readme.txt
@@ -141,6 +141,8 @@
 - EX:  Updated LIS302DL to 1.1.0 (backported to 18.2.1).
 - EX:  Updated LPS25H to 1.1.0 (backported to 18.2.1).
 - EX:  Updated LSM303DLHC to 1.1.0 (backported to 18.2.1).
+- HAL: Fixed invalid checks in STM32F37x HAL related to SDADC (bug #973)
+       (backported to 18.2.2 and 17.6.5).
 - HAL: Fixed option STM32_LSCOSEL not written in STM32L4 HAL (bug #970)
        (backported to 18.2.2 and 17.6.5).
 - HAL: Fixed invalid DFSDM1SEL option in STM32L4 HAL (bug #969)(backported