diff --git a/docs/releasehistory.rst b/docs/releasehistory.rst
index c153d9a2..25693644 100644
--- a/docs/releasehistory.rst
+++ b/docs/releasehistory.rst
@@ -13,6 +13,7 @@ Releases follow the ``major.minor.micro`` scheme recommended by `PEP440 <https:/
 Bugfixes
 """"""""
 - `PR #129 <https://github.com/martimunicoy/peleffy/pull/129>`_: Some format errors in the API documentation are fixed. Links to the PELE documentation are updated.
+- `PR #134 <https://github.com/martimunicoy/peleffy/pull/134>`_: Fixes bug when parsing the parameters of the ligand when OPLS is used to parameterize. 
 
 
 1.2.0 - New tools for parameters and templates
diff --git a/peleffy/forcefield/parameters.py b/peleffy/forcefield/parameters.py
index ad1c7265..93c6801d 100644
--- a/peleffy/forcefield/parameters.py
+++ b/peleffy/forcefield/parameters.py
@@ -952,7 +952,7 @@ def from_ffld_output(molecule, ffld_output):
                 assert len(fields) > 7, 'Unexpected number of fields ' \
                     + 'found at line {}'.format(line)
 
-                name_to_index[line[0:4]] = len(name_to_index)
+                name_to_index[line[0:8]] = len(name_to_index)
 
                 params['atom_types'].append(fields[3])
                 params['charges'].append(
@@ -971,8 +971,8 @@ def from_ffld_output(molecule, ffld_output):
                     + 'found at line {}'.format(line)
 
                 params['bonds'].append(
-                    {'atom1_idx': name_to_index[line[0:4]],
-                     'atom2_idx': name_to_index[line[8:12]],
+                    {'atom1_idx': name_to_index[line[0:8]],
+                     'atom2_idx': name_to_index[line[8:16]],
                      'spring_constant': unit.Quantity(
                         float(fields[2]), unit.kilocalorie
                         / (unit.angstrom ** 2 * unit.mole)),
@@ -986,9 +986,9 @@ def from_ffld_output(molecule, ffld_output):
                     + 'found at line {}'.format(line)
 
                 params['angles'].append(
-                    {'atom1_idx': name_to_index[line[0:4]],
-                     'atom2_idx': name_to_index[line[8:12]],
-                     'atom3_idx': name_to_index[line[16:20]],
+                    {'atom1_idx': name_to_index[line[0:8]],
+                     'atom2_idx': name_to_index[line[8:16]],
+                     'atom3_idx': name_to_index[line[16:24]],
                      'spring_constant': unit.Quantity(
                         float(fields[3]), unit.kilocalorie
                         / (unit.radian ** 2 * unit.mole)),
@@ -1001,10 +1001,10 @@ def from_ffld_output(molecule, ffld_output):
                 assert len(fields) > 9, 'Unexpected number of fields ' \
                     + 'found at line {}'.format(line)
 
-                atom1_idx = name_to_index[line[0:4]]
-                atom2_idx = name_to_index[line[8:12]]
-                atom3_idx = name_to_index[line[16:20]]
-                atom4_idx = name_to_index[line[24:28]]
+                atom1_idx = name_to_index[line[0:8]]
+                atom2_idx = name_to_index[line[8:16]]
+                atom3_idx = name_to_index[line[16:24]]
+                atom4_idx = name_to_index[line[24:32]]
 
                 for k, periodicity, phase in zip(
                         fields[4:8], [1, 2, 3, 4],
@@ -1051,10 +1051,10 @@ def from_ffld_output(molecule, ffld_output):
                                   unit.kilocalorie / unit.mole)
 
                 params['impropers'].append(
-                    {'atom1_idx': name_to_index[line[0:4]],
-                     'atom2_idx': name_to_index[line[8:12]],
-                     'atom3_idx': name_to_index[line[16:20]],
-                     'atom4_idx': name_to_index[line[24:28]],
+                    {'atom1_idx': name_to_index[line[0:8]],
+                     'atom2_idx': name_to_index[line[8:16]],
+                     'atom3_idx': name_to_index[line[16:24]],
+                     'atom4_idx': name_to_index[line[24:32]],
                      'periodicity': 2,
                      'phase': unit.Quantity(180.0, unit.degree),
                      'k': k / 2.0,  # PELE works with half of Schrodinger's force constant