diff --git a/q/QuantumESPRESSO/QuantumESPRESSO-6.1-intel-2017a.eb b/q/QuantumESPRESSO/QuantumESPRESSO-6.1-intel-2017a.eb
index 4a105c34..2c62eed7 100644
--- a/q/QuantumESPRESSO/QuantumESPRESSO-6.1-intel-2017a.eb
+++ b/q/QuantumESPRESSO/QuantumESPRESSO-6.1-intel-2017a.eb
@@ -39,17 +39,6 @@ patches = [
     'QuantumESPRESSO-5.4.0_yambo-fixes.patch',
 ]
 
-# source checksums
-checksums = [
-    'db398edcad76e085f8c8a3f6ecb7aaab',  # qe-6.1.tar.gz
-    '07a81c002b41d6d0f97857e55c57d769',  # wannier90-2.1.0.tar.gz
-    '178055353e59eb4dd8bebe27331f2927',  # qe-gipaw-6.1.tar.gz
-    # 'f094031c6d13a0e00022daf4d7c847c7',  # plumed-1.3-qe-r11758.tar.gz
-    'ac365daebbe380bf4019235eacf71079',  # want-2.5.1-base.tar.gz
-    '000abe6a5dccd1e722d1767c3dcd3996',  # West-2.0.1.tar.gz
-    'f0820a0f42dfc81ce3811af647bed777',  # yambo-3.4.2.tgz
-]
-
 # add plumed and uncomment the lines in sources and checksums if the package is downloaded manually
 buildopts = 'all w90 epw gipaw want west yambo xspectra'  # plumed