diff --git a/src/InputOutput/IHMImpl/Params/PlotImpl/IHMInputOutputParamsPlotClass.php b/src/InputOutput/IHMImpl/Params/PlotImpl/IHMInputOutputParamsPlotClass.php
index 67d9fe4..e37bc70 100644
--- a/src/InputOutput/IHMImpl/Params/PlotImpl/IHMInputOutputParamsPlotClass.php
+++ b/src/InputOutput/IHMImpl/Params/PlotImpl/IHMInputOutputParamsPlotClass.php
@@ -169,7 +169,7 @@ class IHMInputOutputParamsPlotClass extends IHMInputOutputParamsAbstractClass
 			$postProcessCmd .= "mv ".$resultFile." ".$waitingResultFile;
 			
 			if ($this->isInteractiveRequest && $isPortrait)
-				$postProcessCmd .= " | convert ".$resultFile." -rotate -90 ".$resultFile;
+				$postProcessCmd .= " | convert ".$waitingResultFile." -rotate -90 ".$waitingResultFile;
 			
 			++$requestIndex;
 		}
--
libgit2 0.21.2