diff --git a/quantum_espresso/README.md b/quantum_espresso/README.md
index 64e5555c39ff2bfccfd51978e5349acbc8b1a8bf..0e136a48ae596161c88ead327d8a241a55db26b8 100644
--- a/quantum_espresso/README.md
+++ b/quantum_espresso/README.md
@@ -236,7 +236,7 @@ since it allows rapid testing of the QE installation, but for benchmark purposes
 |------------|---------------|-------------|----------|------|
 | test case A (small) | AUSURF | 112 atoms | 2 | < 4-8 nodes on most systems |
 | test case C (medium)| GRIR443 | 432 | 4| Medium scaling, often 20 nodes |
-| test case B (large) | CNT | Carbon nanotube | | Large scaling runs only. Memory and time requirements very high|
+| test case B (large) | CNT | Carbon nanotube |1| Large scaling runs only. Memory and time requirements very high|
 
 
 __Last updated: 22-October-2020__