diff --git a/xgm.py b/xgm.py
index c9b717c864e92c485511302c823df048fc729f42..dbc3eb7732f313fdec3f2ecb3ad38b7dedc0ea0e 100644
--- a/xgm.py
+++ b/xgm.py
@@ -535,7 +535,7 @@ def calibrateTIM(data, rollingWindow=200, mcp=1, plot=False, use_apd=True, intst
         
         ax = plt.subplot(234)
         xgm_fast = selectSASEinXGM(data)
-        ax.scatter(filteredTIM, xgm_fast, s=5, alpha=0.1, rasterize=True)
+        ax.scatter(filteredTIM, xgm_fast, s=5, alpha=0.1, rasterized=True)
         fit, cov = np.polyfit(filteredTIM.values.flatten(),xgm_fast.values.flatten(),1, cov=True)
         y=np.poly1d(fit)
         x=np.linspace(filteredTIM.min(), filteredTIM.max(), 10)