diff --git a/os/hal/ports/STM32/LLD/DACv1/hal_dac_lld.h b/os/hal/ports/STM32/LLD/DACv1/hal_dac_lld.h
index f78580af4..09550fae6 100644
--- a/os/hal/ports/STM32/LLD/DACv1/hal_dac_lld.h
+++ b/os/hal/ports/STM32/LLD/DACv1/hal_dac_lld.h
@@ -488,9 +488,9 @@
  * @brief   Max DAC channels.
  */
 #if STM32_DAC_DUAL_MODE == FALSE
-#define DAC_MAX_CHANNELS                    1
-#else
 #define DAC_MAX_CHANNELS                    2
+#else
+#define DAC_MAX_CHANNELS                    1
 #endif
 
 /*===========================================================================*/
diff --git a/readme.txt b/readme.txt
index 0b8ed26bc..fc840806d 100644
--- a/readme.txt
+++ b/readme.txt
@@ -154,6 +154,8 @@
 - HAL: Added a new interface for range-finder devices (used by EX).
 - HAL: Added mcuconf.h updater tool for STM32F407 (backported to 19.1.1).
 - NIL: Integrated NIL 4.0.
+- FIX: Fixed wrong check on STM32_DAC_DUAL_MODE in DACv1 STM32 driver
+       (bug #1065)(backported to 19.1.4)(backported to 18.2.3).
 - FIX: Fixed I2Cv1 extra interrupts (bug #1064)
        (backported to 19.1.4)(backported to 18.2.3).
 - FIX: Fixed I2C4 broken on STM32H7xx (bug #1063)