diff --git a/Postbox.xcodeproj/project.pbxproj b/Postbox.xcodeproj/project.pbxproj
index ee3ec164e3..17f9afc8c6 100644
--- a/Postbox.xcodeproj/project.pbxproj
+++ b/Postbox.xcodeproj/project.pbxproj
@@ -1674,7 +1674,7 @@
 				SDKROOT = macosx;
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
-				SWIFT_VERSION = 5.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = ReleaseHockeyapp;
 		};
@@ -1828,7 +1828,7 @@
 				SDKROOT = macosx;
 				SKIP_INSTALL = YES;
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG;
-				SWIFT_VERSION = 5.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = DebugFork;
 		};
@@ -1982,7 +1982,7 @@
 				SDKROOT = macosx;
 				SKIP_INSTALL = YES;
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG;
-				SWIFT_VERSION = 5.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = DebugAppStore;
 		};
@@ -2221,7 +2221,7 @@
 				SDKROOT = macosx;
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
-				SWIFT_VERSION = 5.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = ReleaseHockeyappInternal;
 		};
@@ -2375,7 +2375,7 @@
 				SDKROOT = macosx;
 				SKIP_INSTALL = YES;
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG;
-				SWIFT_VERSION = 5.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = DebugAppStoreLLC;
 		};
@@ -2415,7 +2415,7 @@
 				SDKROOT = macosx;
 				SKIP_INSTALL = YES;
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG;
-				SWIFT_VERSION = 5.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = DebugHockeyapp;
 		};
@@ -2452,7 +2452,7 @@
 				SDKROOT = macosx;
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
-				SWIFT_VERSION = 5.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = ReleaseAppStore;
 		};
@@ -2589,7 +2589,7 @@
 				SDKROOT = macosx;
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
-				SWIFT_VERSION = 5.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = ReleaseAppStoreLLC;
 		};
diff --git a/PostboxMac/PostboxMac.h b/PostboxMac/PostboxMac.h
index c1c82e15e8..1ac4979d37 100644
--- a/PostboxMac/PostboxMac.h
+++ b/PostboxMac/PostboxMac.h
@@ -18,4 +18,3 @@ FOUNDATION_EXPORT const unsigned char PostboxMacVersionString[];
 
 
 #import <PostboxMac/MurMurHash32.h>
-#import <PostboxMac/IpcNotifier.h>