diff --git a/tests/regression/input_files/IFE.IN.DAT b/tests/regression/input_files/IFE.IN.DAT
index 5268b0edd..06493b2de 100644
--- a/tests/regression/input_files/IFE.IN.DAT
+++ b/tests/regression/input_files/IFE.IN.DAT
@@ -25,6 +25,7 @@ p_plant_electric_net_required_mw  = 1000.0     *Required net electric power (MW)
 *---------------Numerics Variables-----------------*
 IOPTIMZ   = 1         *Code operation switch (1: for optimisation VMCON only)
 minmax    = 18        *Null FoM, find feasible
+maxcal    = 100       *Maximum number of solver iterations
 
 
 *------------------IFE Variables-------------------*
diff --git a/tests/regression/input_files/large_tokamak_nof.IN.DAT b/tests/regression/input_files/large_tokamak_nof.IN.DAT
index 1b92aa82c..663fd28fe 100644
--- a/tests/regression/input_files/large_tokamak_nof.IN.DAT
+++ b/tests/regression/input_files/large_tokamak_nof.IN.DAT
@@ -17,8 +17,13 @@ minmax = 1
 * Error tolerance for VMCON
 epsvmc = 1e-7
 
+* Number of equality constraints
+* (the first neqns icc=... statements are equality constraints)
 neqns = 3
 
+* Maximum number of solver iterations
+maxcal = 100
+
 * Constraint Equations - Consistency Equations *
 ************************************************
 
diff --git a/tests/regression/input_files/low_aspect_ratio_DEMO.IN.DAT b/tests/regression/input_files/low_aspect_ratio_DEMO.IN.DAT
index 70a07f556..b11485760 100644
--- a/tests/regression/input_files/low_aspect_ratio_DEMO.IN.DAT
+++ b/tests/regression/input_files/low_aspect_ratio_DEMO.IN.DAT
@@ -10,7 +10,7 @@
 
 *----------------------------Global Variables---------------------------*
 
-maxcal = 1000
+maxcal = 100
 * DESCRIPTION:   Maximum number of VMCON iterations
 * JUSTIFICATION: default
 
diff --git a/tests/regression/input_files/st_regression.IN.DAT b/tests/regression/input_files/st_regression.IN.DAT
index 982d0cdb3..76d5cc679 100644
--- a/tests/regression/input_files/st_regression.IN.DAT
+++ b/tests/regression/input_files/st_regression.IN.DAT
@@ -28,7 +28,7 @@
 *________________________________________________________________________*
 *----------------------------Global Variables---------------------------*
 *‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾*
-maxcal = 200
+maxcal = 100
 * DESCRIPTION:   Maximum number of VMCON iterations
 * JUSTIFICATION: Twice default, no impact on result