diff --git a/fs/ocfs2/extent_map.c b/fs/ocfs2/extent_map.c
index d35a27f..5328529 100644
--- a/fs/ocfs2/extent_map.c
+++ b/fs/ocfs2/extent_map.c
@@ -192,7 +192,7 @@
 		emi->ei_clusters += ins->ei_clusters;
 		return 1;
 	} else if ((ins->ei_phys + ins->ei_clusters) == emi->ei_phys &&
-		   (ins->ei_cpos + ins->ei_clusters) == emi->ei_phys &&
+		   (ins->ei_cpos + ins->ei_clusters) == emi->ei_cpos &&
 		   ins->ei_flags == emi->ei_flags) {
 		emi->ei_phys = ins->ei_phys;
 		emi->ei_cpos = ins->ei_cpos;