diff --git a/Source/common/SNTConfigurator.m b/Source/common/SNTConfigurator.m
index f32436727..efa0ef03f 100644
--- a/Source/common/SNTConfigurator.m
+++ b/Source/common/SNTConfigurator.m
@@ -1040,6 +1040,9 @@ - (id)forcedConfigValueForKey:(NSString *)key {
 }
 
 - (void)startWatchingDefaults {
+  // Only com.google.santa.daemon should listen.
+  NSString *processName = [[NSProcessInfo processInfo] processName];
+  if (![processName isEqualToString:@"com.google.santa.daemon"]) return;
   [[NSNotificationCenter defaultCenter] addObserver:self
                                            selector:@selector(defaultsChanged:)
                                                name:NSUserDefaultsDidChangeNotification