diff --git a/Turbulence_Sim_v1_python/Example_2_tiltonly.py b/Turbulence_Sim_v1_python/Example_2_tiltonly.py
index 4b1b805..5aaafb2 100644
--- a/Turbulence_Sim_v1_python/Example_2_tiltonly.py
+++ b/Turbulence_Sim_v1_python/Example_2_tiltonly.py
@@ -20,7 +20,7 @@ def rgb2gray(rgb):
     return np.dot(rgb[...,:3], [0.2989, 0.5870, 0.1140])
 
 
-img = rgb2gray(plt.imread('chart.png'))
+img = rgb2gray(plt.imread('./data/chart.png'))
 N = 225 # size of the image -- assumed to be square (pixels)
 D = 0.1 # length of aperture diameter (meters)
 L = 7000 # length of propagation (meters)
@@ -36,4 +36,4 @@ def rgb2gray(rgb):
     img_, _ = util.genTiltImg(img, param_obj) # generating the tilt-only image
 
     plt.imshow(img_,cmap='gray',vmin=0,vmax=1)
-    plt.show()
\ No newline at end of file
+    plt.show()