diff --git a/python/imagej/IsoView-GCaMP/lib/serial2Dregistration.py b/python/imagej/IsoView-GCaMP/lib/serial2Dregistration.py
index 246f7af9..afd2b337 100644
--- a/python/imagej/IsoView-GCaMP/lib/serial2Dregistration.py
+++ b/python/imagej/IsoView-GCaMP/lib/serial2Dregistration.py
@@ -270,7 +270,7 @@ def makeLinkedTiles(filepaths, csvDir, params, paramsSIFT, n_adjacent, propertie
 
 def align(filepaths, csvDir, params, paramsSIFT, paramsTileConfiguration, properties):
   if not os.path.exists(csvDir):
-    os.mkdirs(csvDir) # recursively
+    os.makedirs(csvDir) # recursively
   name = "matrices"
   matrices = loadMatrices(name, csvDir)
   if matrices: