diff --git a/Integrals_storage.md b/Integrals_storage.md
index f1fc740..60c0fd4 100644
--- a/Integrals_storage.md
+++ b/Integrals_storage.md
@@ -2,7 +2,7 @@ Two electron integrals are of the form (ij|kl), with permutation rules for the 4
 It is not possible to store all the (ij|kl) integrals in memory under the form of a 4-dimensional
 array, so we store instead all the non-zero integrals in a data structure, similar to a hash table.
 
-We do use hash tables because :
+We do not use hash tables because :
 
 1. Rehashing the table as it grows is too costly
 2. We need some locality if possible : (ij|kl) should be close to (ij|k l+1)