diff --git a/src/worksp/mzscheme/mzscheme.sln b/src/worksp/mzscheme/mzscheme.sln
index ad5c98346b..421bf1b306 100644
--- a/src/worksp/mzscheme/mzscheme.sln
+++ b/src/worksp/mzscheme/mzscheme.sln
@@ -3,15 +3,15 @@ Microsoft Visual Studio Solution File, Format Version 9.00
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "MzScheme", "mzscheme.vcproj", "{EB7023C8-6D72-4DE4-ADFC-3913C4C70991}"
 	ProjectSection(ProjectDependencies) = postProject
 		{A6713577-7DFB-48F8-B8C1-7DB2D7C51F90} = {A6713577-7DFB-48F8-B8C1-7DB2D7C51F90}
-		{CB68718B-24BF-43E3-9E96-BCF9B37CFE2D} = {CB68718B-24BF-43E3-9E96-BCF9B37CFE2D}
+		{66548E7B-294E-40EF-B7C0-C8D6D7E6234F} = {66548E7B-294E-40EF-B7C0-C8D6D7E6234F}
 	EndProjectSection
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "libmzsch", "..\libmzsch\libmzsch.vcproj", "{A6713577-7DFB-48F8-B8C1-7DB2D7C51F90}"
 	ProjectSection(ProjectDependencies) = postProject
-		{CB68718B-24BF-43E3-9E96-BCF9B37CFE2D} = {CB68718B-24BF-43E3-9E96-BCF9B37CFE2D}
+		{66548E7B-294E-40EF-B7C0-C8D6D7E6234F} = {66548E7B-294E-40EF-B7C0-C8D6D7E6234F}
 	EndProjectSection
 EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "libmzgc", "..\libmzgc\libmzgc.vcproj", "{CB68718B-24BF-43E3-9E96-BCF9B37CFE2D}"
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "libmzgc", "..\libmzgc\libmzgc.vcproj", "{66548E7B-294E-40EF-B7C0-C8D6D7E6234F}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -27,10 +27,10 @@ Global
 		{A6713577-7DFB-48F8-B8C1-7DB2D7C51F90}.Debug|Win32.Build.0 = Debug|Win32
 		{A6713577-7DFB-48F8-B8C1-7DB2D7C51F90}.Release|Win32.ActiveCfg = Release|Win32
 		{A6713577-7DFB-48F8-B8C1-7DB2D7C51F90}.Release|Win32.Build.0 = Release|Win32
-		{CB68718B-24BF-43E3-9E96-BCF9B37CFE2D}.Debug|Win32.ActiveCfg = Debug|Win32
-		{CB68718B-24BF-43E3-9E96-BCF9B37CFE2D}.Debug|Win32.Build.0 = Debug|Win32
-		{CB68718B-24BF-43E3-9E96-BCF9B37CFE2D}.Release|Win32.ActiveCfg = Release|Win32
-		{CB68718B-24BF-43E3-9E96-BCF9B37CFE2D}.Release|Win32.Build.0 = Release|Win32
+		{66548E7B-294E-40EF-B7C0-C8D6D7E6234F}.Debug|Win32.ActiveCfg = Debug|Win32
+		{66548E7B-294E-40EF-B7C0-C8D6D7E6234F}.Debug|Win32.Build.0 = Debug|Win32
+		{66548E7B-294E-40EF-B7C0-C8D6D7E6234F}.Release|Win32.ActiveCfg = Release|Win32
+		{66548E7B-294E-40EF-B7C0-C8D6D7E6234F}.Release|Win32.Build.0 = Release|Win32
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE