diff --git a/ci/win/build_installer_qt6.iss b/ci/win/build_installer_qt6.iss
index 3e8275a4..a19918d2 100644
--- a/ci/win/build_installer_qt6.iss
+++ b/ci/win/build_installer_qt6.iss
@@ -62,8 +62,8 @@ Source: Qt6Svg.dll; DestDir: {app}
 Source: Qt6ShaderTools.dll; DestDir: {app}
 
 ;Qt Angle
-Source: opengl32sw.dll; DestDir: {app}
-Source: D3Dcompiler_47.dll; DestDir: {app}
+Source: opengl32sw.dll; DestDir: {app}; Flags: skipifsourcedoesntexist
+Source: D3Dcompiler_47.dll; DestDir: {app}; Flags: skipifsourcedoesntexist
 
 ;Qt PlugIns
 Source:generic\*;  DestDir: {app}\generic\