diff --git a/src/tools/msvc/ecpg_regression.proj b/src/tools/msvc/ecpg_regression.proj
index cccd6bce2e..874ea10dfb 100644
--- a/src/tools/msvc/ecpg_regression.proj
+++ b/src/tools/msvc/ecpg_regression.proj
@@ -36,6 +36,12 @@
   <CreateProperty Value="-c" Condition="'%(Pgc.FileName)'=='array_of_struct'">
    <Output TaskParameter="Value" PropertyName="ECPGPARAM" />
   </CreateProperty>
+  <CreateProperty Value="-r questionmarks" Condition="'%(Pgc.FileName)'=='oldexec'">
+   <Output TaskParameter="Value" PropertyName="ECPGPARAM" />
+  </CreateProperty>
+  <CreateProperty Value="-r prepare" Condition="'%(Pgc.FileName)'=='autoprep'">
+   <Output TaskParameter="Value" PropertyName="ECPGPARAM" />
+  </CreateProperty>
 
   <!-- Run ECPG and the Visual C++ compiler on the files. Don't bother with dependency check between the steps -->
   <Exec WorkingDirectory="%(Pgc.RelativeDir)" Command="$(OUTDIR)ecpg\ecpg -I ../../include --regression $(ECPGPARAM) -o %(Pgc.Filename).c %(Pgc.Filename).pgc" />