diff --git a/INSTALL.md b/INSTALL.md
index 62db863..e9dab58 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -28,7 +28,7 @@
 #### OS X Notes
 Using [Homebrew](http://brew.sh):
 ```
-brew install openal-soft freealut libconfig python3
+brew install openal-soft freealut libconfig
 brew install --HEAD https://raw.githubusercontent.com/Tox/homebrew-tox/master/Formula/libtoxcore.rb
 brew install libnotify
 ```
@@ -56,7 +56,8 @@ Run `make doc` in the build directory after editing the asciidoc files to regene
   * `DISABLE_AV=1` → build toxic without audio call support
   * `DISABLE_SOUND_NOTIFY=1` → build toxic without sound notifications support
   * `DISABLE_DESKTOP_NOTIFY=1` → build toxic without desktop notifications support
-  * `DISABLE_PYTHON=1` → build toxic without Python scripting support
+* Features excluded from the default build must be explicitly enabled using special variables:
+  * `ENABLE_PYTHON=1` → build toxic with Python scripting support
 
 #### Packaging
 * For packaging purpose, you can use `DESTDIR=""` to specify a directory where to store installed files
diff --git a/cfg/checks/check_features.mk b/cfg/checks/check_features.mk
index aa66ad1..aa5990f 100644
--- a/cfg/checks/check_features.mk
+++ b/cfg/checks/check_features.mk
@@ -41,7 +41,7 @@ ifneq ($(QR_PNG), disabled)
 endif
 
 # Check if we want build Python scripting support
-PYTHON = $(shell if [ -z "$(DISABLE_PYTHON)" ] || [ "$(DISABLE_PYTHON)" = "0" ] ; then echo enabled ; else echo disabled ; fi)
+PYTHON = $(shell if [ -z "$(ENABLE_PYTHON)" ] || [ "$(ENABLE_PYTHON)" = "0" ] ; then echo disabled ; else echo enabled ; fi)
 ifneq ($(PYTHON), disabled)
     -include $(CHECKS_DIR)/python.mk
 endif
diff --git a/cfg/targets/help.mk b/cfg/targets/help.mk
index 1d09520..7a1f136 100644
--- a/cfg/targets/help.mk
+++ b/cfg/targets/help.mk
@@ -15,7 +15,7 @@ help:
 	@echo "  DISABLE_SOUND_NOTIFY:   Set to \"1\" to force building without sound notification support"
 	@echo "  DISABLE_DESKTOP_NOTIFY: Set to \"1\" to force building without desktop notifications support"
 	@echo "  DISABLE_QRPNG:          Set to \"1\" to force building without QR exported as PNG support"
-	@echo "  DISABLE_PYTHON:         Set to \"1\" to force building without Python scripting support"
+	@echo "  ENABLE_PYTHON:          Set to \"1\" to enable building with Python scripting support"
 	@echo "  USER_CFLAGS:            Add custom flags to default CFLAGS"
 	@echo "  USER_LDFLAGS:           Add custom flags to default LDFLAGS"
 	@echo "  PREFIX:                 Specify a prefix directory for binaries, data files,... (default is \"$(abspath $(PREFIX))\")"