diff --git a/Arduino.mk b/Arduino.mk
index 02efc4b..767f493 100644
--- a/Arduino.mk
+++ b/Arduino.mk
@@ -785,7 +785,7 @@ else
 endif
 
 # Using += instead of =, so that CPPFLAGS can be set per sketch level
-CPPFLAGS      += -$(MCU_FLAG_NAME)=$(MCU) -DF_CPU=$(F_CPU) -DARDUINO=$(ARDUINO_VERSION) \
+CPPFLAGS      += -$(MCU_FLAG_NAME)=$(MCU) -DF_CPU=$(F_CPU) -DARDUINO=$(ARDUINO_VERSION) -D__PROG_TYPES_COMPAT__ \
         -I. -I$(ARDUINO_CORE_PATH) -I$(ARDUINO_VAR_PATH)/$(VARIANT) \
         $(SYS_INCLUDES) $(USER_INCLUDES) -Wall -ffunction-sections \
         -fdata-sections
diff --git a/README.md b/README.md
index 28d85e6..1fe1cbb 100644
--- a/README.md
+++ b/README.md
@@ -122,7 +122,7 @@ It is possible to use [`colorgcc`](https://github.com/colorgcc/colorgcc) with th
 
 ## Versioning
 
-The current version of the makefile is `1.3.1`. You can find the full history in the [HISTORY.md](HISTORY.md) file
+The current version of the makefile is `1.3.2`. You can find the full history in the [HISTORY.md](HISTORY.md) file
 
 This project adheres to Semantic [Versioning 2.0](http://semver.org/).