diff --git a/FlightGear.iss b/FlightGear.iss
index 5a848f1..734096a 100755
--- a/FlightGear.iss
+++ b/FlightGear.iss
@@ -101,6 +101,7 @@ Source: "{#OSG64InstallDir}\bin\osg{#OSGSoNumber}-osgUtil.dll"; DestDir: "{app}\
 Source: "{#OSG64InstallDir}\bin\osg{#OSGSoNumber}-osgViewer.dll"; DestDir: "{app}\bin"; Check: Is64BitInstallMode
 Source: "{#OSG64InstallDir}\bin\osg{#OSGSoNumber}-osgSim.dll"; DestDir: "{app}\bin"; Check: Is64BitInstallMode
 Source: "{#OSG64InstallDir}\bin\osg{#OSGSoNumber}-osgFX.dll"; DestDir: "{app}\bin"; Check: Is64BitInstallMode
+Source: "{#OSG64InstallDir}\bin\osg{#OSGSoNumber}-osgTerrain.dll"; DestDir: "{app}\bin"; Check: Is64BitInstallMode
 Source: "{#OSG64InstallDir}\bin\ot{#OTSoNumber}-OpenThreads.dll"; DestDir: "{app}\bin"; Check: Is64BitInstallMode
 
 Source: "{#OSG64PluginsDir}\osgdb_ac.dll"; DestDir: "{app}\bin\osgPlugins-{#OSGVersion}"; Flags: skipifsourcedoesntexist; Check: Is64BitInstallMode