diff --git a/api/__init__.py b/api/__init__.py
index 7126da2..51b7fb8 100644
--- a/api/__init__.py
+++ b/api/__init__.py
@@ -101,7 +101,7 @@ from .s23_options import set_option
 from .s23_options_util import OPTION_V3_FLOW_UNITS_CFS, OPTION_V3_FLOW_UNITS_GPM, OPTION_V3_FLOW_UNITS_MGD, OPTION_V3_FLOW_UNITS_IMGD, OPTION_V3_FLOW_UNITS_AFD, OPTION_V3_FLOW_UNITS_LPS, OPTION_V3_FLOW_UNITS_LPM, OPTION_V3_FLOW_UNITS_MLD, OPTION_V3_FLOW_UNITS_CMH, OPTION_V3_FLOW_UNITS_CMD
 from .s23_options_util import OPTION_V3_PRESSURE_UNITS_PSI, OPTION_V3_PRESSURE_UNITS_KPA, OPTION_V3_PRESSURE_UNITS_M
 from .s23_options_util import OPTION_V3_HEADLOSS_MODEL_HW, OPTION_V3_HEADLOSS_MODEL_DW, OPTION_V3_HEADLOSS_MODEL_CM
-from .s23_options_util import OPTION_V3_STEP_SIZING, OPTION_V3_STEP_SIZING, OPTION_V3_STEP_SIZING
+from .s23_options_util import OPTION_V3_STEP_SIZING_FULL, OPTION_V3_STEP_SIZING_RELAXATION, OPTION_V3_STEP_SIZING_LINESEARCH
 from .s23_options_util import OPTION_V3_IF_UNBALANCED_STOP, OPTION_V3_IF_UNBALANCED_CONTINUE
 from .s23_options_util import OPTION_V3_DEMAND_MODEL_FIXED, OPTION_V3_DEMAND_MODEL_CONSTRAINED, OPTION_V3_DEMAND_MODEL_POWER, OPTION_V3_DEMAND_MODEL_LOGISTIC
 from .s23_options_util import OPTION_V3_LEAKAGE_MODEL_NONE, OPTION_V3_LEAKAGE_MODEL_POWER, OPTION_V3_LEAKAGE_MODEL_FAVAD
diff --git a/api/s23_options_util.py b/api/s23_options_util.py
index ce4aac2..79cb7e4 100644
--- a/api/s23_options_util.py
+++ b/api/s23_options_util.py
@@ -164,9 +164,9 @@ OPTION_V3_HEADLOSS_MODEL_HW = OPTION_HEADLOSS_HW
 OPTION_V3_HEADLOSS_MODEL_DW = OPTION_HEADLOSS_DW
 OPTION_V3_HEADLOSS_MODEL_CM = OPTION_HEADLOSS_CM
 
-OPTION_V3_STEP_SIZING = 'FULL'
-OPTION_V3_STEP_SIZING = 'RELAXATION'
-OPTION_V3_STEP_SIZING = 'LINESEARCH'
+OPTION_V3_STEP_SIZING_FULL       = 'FULL'
+OPTION_V3_STEP_SIZING_RELAXATION = 'RELAXATION'
+OPTION_V3_STEP_SIZING_LINESEARCH = 'LINESEARCH'
 
 OPTION_V3_IF_UNBALANCED_STOP     = OPTION_UNBALANCED_STOP
 OPTION_V3_IF_UNBALANCED_CONTINUE = OPTION_UNBALANCED_CONTINUE
diff --git a/tjnetwork.py b/tjnetwork.py
index a831227..b874c2d 100644
--- a/tjnetwork.py
+++ b/tjnetwork.py
@@ -118,9 +118,9 @@ OPTION_V3_HEADLOSS_MODEL_HW = api.OPTION_V3_HEADLOSS_MODEL_HW
 OPTION_V3_HEADLOSS_MODEL_DW = api.OPTION_V3_HEADLOSS_MODEL_DW
 OPTION_V3_HEADLOSS_MODEL_CM = api.OPTION_V3_HEADLOSS_MODEL_CM
 
-OPTION_V3_STEP_SIZING = api.OPTION_V3_STEP_SIZING
-OPTION_V3_STEP_SIZING = api.OPTION_V3_STEP_SIZING
-OPTION_V3_STEP_SIZING = api.OPTION_V3_STEP_SIZING
+OPTION_V3_STEP_SIZING_FULL       = api.OPTION_V3_STEP_SIZING_FULL
+OPTION_V3_STEP_SIZING_RELAXATION = api.OPTION_V3_STEP_SIZING_RELAXATION
+OPTION_V3_STEP_SIZING_LINESEARCH = api.OPTION_V3_STEP_SIZING_LINESEARCH
 
 OPTION_V3_IF_UNBALANCED_STOP     = api.OPTION_V3_IF_UNBALANCED_STOP
 OPTION_V3_IF_UNBALANCED_CONTINUE = api.OPTION_V3_IF_UNBALANCED_CONTINUE