diff --git a/mesonbuild/interpreterbase.py b/mesonbuild/interpreterbase.py
index 082515c45a52..5c8390029274 100644
--- a/mesonbuild/interpreterbase.py
+++ b/mesonbuild/interpreterbase.py
@@ -500,6 +500,8 @@ def evaluate_dictstatement(self, cur):
 
     def evaluate_notstatement(self, cur):
         v = self.evaluate_statement(cur.value)
+        if is_disabler(v):
+            return v
         if not isinstance(v, bool):
             raise InterpreterException('Argument to "not" is not a boolean.')
         return not v
diff --git a/test cases/common/163 disabler/meson.build b/test cases/common/163 disabler/meson.build
index 5eb24ba11c7f..8da2a0bd1487 100644
--- a/test cases/common/163 disabler/meson.build	
+++ b/test cases/common/163 disabler/meson.build	
@@ -76,3 +76,25 @@ else
     has_not_changed = true
 endif
 assert(has_not_changed, 'App has changed.')
+
+if_is_disabled = true
+if disabler()
+  if_is_disabled = false
+else
+  if_is_disabled = false
+endif
+assert(if_is_disabled, 'Disabler in "if condition" must skip both blocks')
+
+if not disabler()
+  if_is_disabled = false
+else
+  if_is_disabled = false
+endif
+assert(if_is_disabled, 'Disabler in "if not condition" must skip both blocks')
+
+if disabler() == 1
+  if_is_disabled = false
+else
+  if_is_disabled = false
+endif
+assert(if_is_disabled, 'Disabler in "if a==b" must skip both blocks')