diff --git a/examples/DemoRunner/Builds/MacOSX/DemoRunner.xcodeproj/project.pbxproj b/examples/DemoRunner/Builds/MacOSX/DemoRunner.xcodeproj/project.pbxproj
index fed5205379..cadabc9241 100644
--- a/examples/DemoRunner/Builds/MacOSX/DemoRunner.xcodeproj/project.pbxproj
+++ b/examples/DemoRunner/Builds/MacOSX/DemoRunner.xcodeproj/project.pbxproj
@@ -1047,6 +1047,7 @@
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				PRODUCT_NAME = "DemoRunner";
+				SDKROOT = macosx;
 				WARNING_CFLAGS = "-Wreorder";
 				ZERO_LINK = NO;
 			};
@@ -1092,6 +1093,7 @@
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				PRODUCT_NAME = "DemoRunner";
+				SDKROOT = macosx;
 				WARNING_CFLAGS = "-Wreorder";
 				ZERO_LINK = NO;
 			};
diff --git a/extras/AudioPerformanceTest/Builds/MacOSX/AudioPerformanceTest.xcodeproj/project.pbxproj b/extras/AudioPerformanceTest/Builds/MacOSX/AudioPerformanceTest.xcodeproj/project.pbxproj
index 41901a176f..6b357db8c7 100644
--- a/extras/AudioPerformanceTest/Builds/MacOSX/AudioPerformanceTest.xcodeproj/project.pbxproj
+++ b/extras/AudioPerformanceTest/Builds/MacOSX/AudioPerformanceTest.xcodeproj/project.pbxproj
@@ -625,6 +625,7 @@
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				PRODUCT_NAME = "AudioPerformanceTest";
+				SDKROOT = macosx;
 				WARNING_CFLAGS = "-Wreorder";
 				ZERO_LINK = NO;
 			};
@@ -670,6 +671,7 @@
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				PRODUCT_NAME = "AudioPerformanceTest";
+				SDKROOT = macosx;
 				WARNING_CFLAGS = "-Wreorder";
 				ZERO_LINK = NO;
 			};
diff --git a/extras/AudioPluginHost/Builds/MacOSX/AudioPluginHost.xcodeproj/project.pbxproj b/extras/AudioPluginHost/Builds/MacOSX/AudioPluginHost.xcodeproj/project.pbxproj
index 6c50579e92..d8debb8d1d 100644
--- a/extras/AudioPluginHost/Builds/MacOSX/AudioPluginHost.xcodeproj/project.pbxproj
+++ b/extras/AudioPluginHost/Builds/MacOSX/AudioPluginHost.xcodeproj/project.pbxproj
@@ -905,6 +905,7 @@
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				PRODUCT_NAME = "AudioPluginHost";
+				SDKROOT = macosx;
 				WARNING_CFLAGS = "-Wreorder";
 				ZERO_LINK = NO;
 			};
@@ -950,6 +951,7 @@
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				PRODUCT_NAME = "AudioPluginHost";
+				SDKROOT = macosx;
 				WARNING_CFLAGS = "-Wreorder";
 				ZERO_LINK = NO;
 			};
diff --git a/extras/BinaryBuilder/Builds/MacOSX/BinaryBuilder.xcodeproj/project.pbxproj b/extras/BinaryBuilder/Builds/MacOSX/BinaryBuilder.xcodeproj/project.pbxproj
index 6cfebf130f..6469db19f5 100644
--- a/extras/BinaryBuilder/Builds/MacOSX/BinaryBuilder.xcodeproj/project.pbxproj
+++ b/extras/BinaryBuilder/Builds/MacOSX/BinaryBuilder.xcodeproj/project.pbxproj
@@ -297,6 +297,7 @@
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				PRODUCT_NAME = "BinaryBuilder";
+				SDKROOT = macosx;
 				WARNING_CFLAGS = "-Wreorder";
 				ZERO_LINK = NO;
 			};
@@ -342,6 +343,7 @@
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				PRODUCT_NAME = "BinaryBuilder";
+				SDKROOT = macosx;
 				WARNING_CFLAGS = "-Wreorder";
 				ZERO_LINK = NO;
 			};
diff --git a/extras/NetworkGraphicsDemo/Builds/MacOSX/NetworkGraphicsDemo.xcodeproj/project.pbxproj b/extras/NetworkGraphicsDemo/Builds/MacOSX/NetworkGraphicsDemo.xcodeproj/project.pbxproj
index cb4629099b..1a92e53c30 100644
--- a/extras/NetworkGraphicsDemo/Builds/MacOSX/NetworkGraphicsDemo.xcodeproj/project.pbxproj
+++ b/extras/NetworkGraphicsDemo/Builds/MacOSX/NetworkGraphicsDemo.xcodeproj/project.pbxproj
@@ -761,6 +761,7 @@
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				PRODUCT_NAME = "JUCE Network Graphics Demo";
+				SDKROOT = macosx;
 				WARNING_CFLAGS = "-Wreorder";
 				ZERO_LINK = NO;
 			};
@@ -806,6 +807,7 @@
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				PRODUCT_NAME = "JUCE Network Graphics Demo";
+				SDKROOT = macosx;
 				WARNING_CFLAGS = "-Wreorder";
 				ZERO_LINK = NO;
 			};
diff --git a/extras/Projucer/Builds/MacOSX/Projucer.xcodeproj/project.pbxproj b/extras/Projucer/Builds/MacOSX/Projucer.xcodeproj/project.pbxproj
index ea86780f8d..c39b641898 100644
--- a/extras/Projucer/Builds/MacOSX/Projucer.xcodeproj/project.pbxproj
+++ b/extras/Projucer/Builds/MacOSX/Projucer.xcodeproj/project.pbxproj
@@ -3330,6 +3330,7 @@
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				PRODUCT_NAME = "Projucer";
+				SDKROOT = macosx;
 				WARNING_CFLAGS = "-Wreorder";
 				ZERO_LINK = NO;
 			};
@@ -3375,6 +3376,7 @@
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				PRODUCT_NAME = "Projucer";
+				SDKROOT = macosx;
 				WARNING_CFLAGS = "-Wreorder";
 				ZERO_LINK = NO;
 			};
diff --git a/extras/UnitTestRunner/Builds/MacOSX/UnitTestRunner.xcodeproj/project.pbxproj b/extras/UnitTestRunner/Builds/MacOSX/UnitTestRunner.xcodeproj/project.pbxproj
index 77b1233065..682a789408 100644
--- a/extras/UnitTestRunner/Builds/MacOSX/UnitTestRunner.xcodeproj/project.pbxproj
+++ b/extras/UnitTestRunner/Builds/MacOSX/UnitTestRunner.xcodeproj/project.pbxproj
@@ -817,6 +817,7 @@
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				PRODUCT_NAME = "UnitTestRunner";
+				SDKROOT = macosx;
 				WARNING_CFLAGS = "-Wreorder";
 				ZERO_LINK = NO;
 			};
@@ -862,6 +863,7 @@
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				PRODUCT_NAME = "UnitTestRunner";
+				SDKROOT = macosx;
 				WARNING_CFLAGS = "-Wreorder";
 				ZERO_LINK = NO;
 			};