diff --git a/corrlib/input/sfcf.py b/corrlib/input/sfcf.py
index acd8261..1af366f 100644
--- a/corrlib/input/sfcf.py
+++ b/corrlib/input/sfcf.py
@@ -258,7 +258,7 @@ def get_specs(key: str, parameters: dict[str, Any], sep: str = '/') -> str:
     return s
 
 
-def read_data(path: Path, project: str, dir_in_project: str, prefix: str, param: dict[str, Any], version: str = '1.0c', cfg_seperator: str = 'n', sep: str = '/', **kwargs: Any) -> dict[str, Any]:
+def read_data(path: Path, project: str, dir_in_project: str, prefix: str, param: dict[str, Any], version: str = '1.0c', cfg_separator: str = 'n', sep: str = '/', **kwargs: Any) -> dict[str, Any]:
     """
     Extract the data from the sfcf file.
 
@@ -274,7 +274,7 @@ def read_data(path: Path, project: str, dir_in_project: str, prefix: str, param:
         The parameter dictionary, as given by read_param.
     version: str
         Version of sfcf.
-    cfg_seperator: str
+    cfg_separator: str
         Separator of the configuration number. Needed for reading. default: "n"
     sep: str
         Seperator for the key in return dict. (default: "/)
@@ -321,10 +321,10 @@ def read_data(path: Path, project: str, dir_in_project: str, prefix: str, param:
     if not param['crr'] == []:
         if names is not None:
             data_crr = pe.input.sfcf.read_sfcf_multi(directory, prefix, param['crr'], param['mrr'], corr_type_list, range(len(param['wf_offsets'])),
-                                                     range(len(param['wf_basis'])), range(len(param['wf_basis'])), version, cfg_seperator, keyed_out=True, silent=True, names=names)
+                                                     range(len(param['wf_basis'])), range(len(param['wf_basis'])), version, cfg_separator, keyed_out=True, silent=True, names=names)
         else:
             data_crr = pe.input.sfcf.read_sfcf_multi(directory, prefix, param['crr'], param['mrr'], corr_type_list, range(len(param['wf_offsets'])),
-                                                     range(len(param['wf_basis'])), range(len(param['wf_basis'])), version, cfg_seperator, keyed_out=True, silent=True)
+                                                     range(len(param['wf_basis'])), range(len(param['wf_basis'])), version, cfg_separator, keyed_out=True, silent=True)
         for key in data_crr.keys():
             data[key] = data_crr[key]
 
diff --git a/corrlib/toml.py b/corrlib/toml.py
index 76533f4..c452dd8 100644
--- a/corrlib/toml.py
+++ b/corrlib/toml.py
@@ -116,7 +116,7 @@ def check_measurement_data(measurements: dict[str, dict[str, str]], code: str) -
     """
     var_names: list[str] = []
     if code == "sfcf":
-        var_names = ["path", "ensemble", "param_file", "version", "prefix", "cfg_seperator", "names"]
+        var_names = ["path", "ensemble", "param_file", "version", "prefix", "cfg_separator", "names"]
     elif code == "openQCD":
         var_names = ["path", "ensemble", "measurement", "prefix"] # , "param_file"
     for mname, md in measurements.items():
@@ -191,10 +191,10 @@ def import_toml(path: Path, file: str, copy_file: bool=True) -> None:
             param = sfcf.read_param(path, uuid, md['param_file'])
             if 'names' in md.keys():
                 measurement = sfcf.read_data(path, uuid, md['path'], md['prefix'], param,
-                                            version=md['version'], cfg_seperator=md['cfg_seperator'], sep='/', names=md['names'])
+                                            version=md['version'], cfg_separator=md['cfg_separator'], sep='/', names=md['names'])
             else:
                 measurement = sfcf.read_data(path, uuid, md['path'], md['prefix'], param,
-                                            version=md['version'], cfg_seperator=md['cfg_seperator'], sep='/')
+                                            version=md['version'], cfg_separator=md['cfg_separator'], sep='/')
 
         elif project['code'] == 'openQCD':
             if md['measurement'] == 'ms1':