diff --git a/IPhreeqc.sln b/IPhreeqc.sln
index 90914702..67f45d14 100644
--- a/IPhreeqc.sln
+++ b/IPhreeqc.sln
@@ -20,6 +20,8 @@ Project("{6989167D-11E4-40FE-8C1A-2192A86A7E90}") = "test_f90", "tests\test_f90.
 		{F9C18E06-F73A-4EB0-92E0-AE1713EA7FD7} = {F9C18E06-F73A-4EB0-92E0-AE1713EA7FD7}
 	EndProjectSection
 EndProject
+Project("{6989167D-11E4-40FE-8C1A-2192A86A7E90}") = "test_f", "tests\test_f.vfproj", "{66E68C3F-EFCE-47EE-80F1-4D8F6F8AB450}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Win32 = Debug|Win32
@@ -96,6 +98,18 @@ Global
 		{003309EE-36BE-493B-87D4-FE68918DA9AF}.ReleaseDll|Win32.ActiveCfg = ReleaseDll|Win32
 		{003309EE-36BE-493B-87D4-FE68918DA9AF}.ReleaseDll|Win32.Build.0 = ReleaseDll|Win32
 		{003309EE-36BE-493B-87D4-FE68918DA9AF}.ReleaseDll|x64.ActiveCfg = Release|Win32
+		{66E68C3F-EFCE-47EE-80F1-4D8F6F8AB450}.Debug|Win32.ActiveCfg = Debug|Win32
+		{66E68C3F-EFCE-47EE-80F1-4D8F6F8AB450}.Debug|Win32.Build.0 = Debug|Win32
+		{66E68C3F-EFCE-47EE-80F1-4D8F6F8AB450}.Debug|x64.ActiveCfg = Debug|Win32
+		{66E68C3F-EFCE-47EE-80F1-4D8F6F8AB450}.DebugDll|Win32.ActiveCfg = Debug|Win32
+		{66E68C3F-EFCE-47EE-80F1-4D8F6F8AB450}.DebugDll|Win32.Build.0 = Debug|Win32
+		{66E68C3F-EFCE-47EE-80F1-4D8F6F8AB450}.DebugDll|x64.ActiveCfg = Debug|Win32
+		{66E68C3F-EFCE-47EE-80F1-4D8F6F8AB450}.Release|Win32.ActiveCfg = Release|Win32
+		{66E68C3F-EFCE-47EE-80F1-4D8F6F8AB450}.Release|Win32.Build.0 = Release|Win32
+		{66E68C3F-EFCE-47EE-80F1-4D8F6F8AB450}.Release|x64.ActiveCfg = Release|Win32
+		{66E68C3F-EFCE-47EE-80F1-4D8F6F8AB450}.ReleaseDll|Win32.ActiveCfg = Release|Win32
+		{66E68C3F-EFCE-47EE-80F1-4D8F6F8AB450}.ReleaseDll|Win32.Build.0 = Release|Win32
+		{66E68C3F-EFCE-47EE-80F1-4D8F6F8AB450}.ReleaseDll|x64.ActiveCfg = Release|Win32
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
diff --git a/tests/main77.f b/tests/main77.f
new file mode 100644
index 00000000..af079797
--- /dev/null
+++ b/tests/main77.f
@@ -0,0 +1,6 @@
+      PROGRAM test_f77
+      IMPLICIT NONE
+      INTEGER(KIND=4) F_MAIN
+      INTEGER(KIND=4) I
+      I = F_MAIN()
+      END PROGRAM test_f77
\ No newline at end of file
diff --git a/tests/test_f.vfproj b/tests/test_f.vfproj
new file mode 100644
index 00000000..5da034c5
--- /dev/null
+++ b/tests/test_f.vfproj
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<VisualStudioProject ProjectCreator="Intel Fortran" Keyword="Console Application" Version="11.0" ProjectIdGuid="{66E68C3F-EFCE-47EE-80F1-4D8F6F8AB450}">
+	<Platforms>
+		<Platform Name="Win32"/></Platforms>
+	<Configurations>
+		<Configuration Name="Debug|Win32">
+				<Tool Name="VFFortranCompilerTool" SuppressStartupBanner="true" DebugInformationFormat="debugEnabled" Optimization="optimizeDisabled" AdditionalIncludeDirectories="../include" Interfaces="true" WarnInterfaces="true" Traceback="true" BoundsCheck="true" RuntimeLibrary="rtMultiThreadedDebug"/>
+				<Tool Name="VFLinkerTool" LinkIncremental="linkIncrementalNo" SuppressStartupBanner="true" AdditionalLibraryDirectories="../lib" GenerateDebugInformation="true" SubSystem="subSystemConsole" AdditionalDependencies="IPhreeqcd.lib"/>
+				<Tool Name="VFResourceCompilerTool"/>
+				<Tool Name="VFMidlTool" SuppressStartupBanner="true"/>
+				<Tool Name="VFCustomBuildTool"/>
+				<Tool Name="VFPreLinkEventTool"/>
+				<Tool Name="VFPreBuildEventTool"/>
+				<Tool Name="VFPostBuildEventTool"/>
+				<Tool Name="VFManifestTool" SuppressStartupBanner="true"/></Configuration>
+		<Configuration Name="Release|Win32">
+				<Tool Name="VFFortranCompilerTool" SuppressStartupBanner="true" AdditionalIncludeDirectories="../include"/>
+				<Tool Name="VFLinkerTool" LinkIncremental="linkIncrementalNo" SuppressStartupBanner="true" AdditionalLibraryDirectories="../lib" SubSystem="subSystemConsole" AdditionalDependencies="IPhreeqc.lib"/>
+				<Tool Name="VFResourceCompilerTool"/>
+				<Tool Name="VFMidlTool" SuppressStartupBanner="true"/>
+				<Tool Name="VFCustomBuildTool"/>
+				<Tool Name="VFPreLinkEventTool"/>
+				<Tool Name="VFPreBuildEventTool"/>
+				<Tool Name="VFPostBuildEventTool"/>
+				<Tool Name="VFManifestTool" SuppressStartupBanner="true"/></Configuration></Configurations>
+	<Files>
+		<Filter Name="Header Files" Filter="fi;fd"/>
+		<Filter Name="Resource Files" Filter="rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe"/>
+		<Filter Name="Source Files" Filter="f90;for;f;fpp;ftn;def;odl;idl">
+		<File RelativePath=".\main77.f"/>
+		<File RelativePath=".\test_f.f"/></Filter></Files>
+	<Globals/></VisualStudioProject>