diff --git a/libs/spandsp/src/libspandsp.sln b/libs/spandsp/src/libspandsp.sln
index 8e63a4229c..36adaf8a7d 100644
--- a/libs/spandsp/src/libspandsp.sln
+++ b/libs/spandsp/src/libspandsp.sln
@@ -4,10 +4,13 @@ Microsoft Visual Studio Solution File, Format Version 10.00
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "libspandsp", "libspandsp.vcproj", "{CF70F278-3364-4395-A2E1-23501C9B8AD2}"
ProjectSection(ProjectDependencies) = postProject
{1CED5987-A529-46DC-B30F-870D85FF9C94} = {1CED5987-A529-46DC-B30F-870D85FF9C94}
+ {401A40CD-5DB4-4E34-AC68-FA99E9FAC014} = {401A40CD-5DB4-4E34-AC68-FA99E9FAC014}
EndProjectSection
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "at_dictionary_gen", "src\msvc\at_dictionary_gen.vcproj", "{1CED5987-A529-46DC-B30F-870D85FF9C94}"
EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "libtiff", "libtiff.vcproj", "{401A40CD-5DB4-4E34-AC68-FA99E9FAC014}"
+EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Win32 = Debug|Win32
@@ -22,6 +25,10 @@ Global
{1CED5987-A529-46DC-B30F-870D85FF9C94}.Debug|Win32.Build.0 = Debug|Win32
{1CED5987-A529-46DC-B30F-870D85FF9C94}.Release|Win32.ActiveCfg = Release|Win32
{1CED5987-A529-46DC-B30F-870D85FF9C94}.Release|Win32.Build.0 = Release|Win32
+ {401A40CD-5DB4-4E34-AC68-FA99E9FAC014}.Debug|Win32.ActiveCfg = Debug|Win32
+ {401A40CD-5DB4-4E34-AC68-FA99E9FAC014}.Debug|Win32.Build.0 = Debug|Win32
+ {401A40CD-5DB4-4E34-AC68-FA99E9FAC014}.Release|Win32.ActiveCfg = Release|Win32
+ {401A40CD-5DB4-4E34-AC68-FA99E9FAC014}.Release|Win32.Build.0 = Release|Win32
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
diff --git a/libs/spandsp/src/libspandsp.vcproj b/libs/spandsp/src/libspandsp.vcproj
index cc7f9420ff..001fc79fb2 100644
--- a/libs/spandsp/src/libspandsp.vcproj
+++ b/libs/spandsp/src/libspandsp.vcproj
@@ -41,7 +41,7 @@
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diff --git a/libs/spandsp/src/msvc/vc8proj.head b/libs/spandsp/src/msvc/vc8proj.head
index 9267393c0c..06ae22a1a9 100644
--- a/libs/spandsp/src/msvc/vc8proj.head
+++ b/libs/spandsp/src/msvc/vc8proj.head
@@ -41,7 +41,7 @@