diff --git a/FalsePosition.m b/FalsePosition.m
index 24be32c..4b274a7 100644
--- a/FalsePosition.m
+++ b/FalsePosition.m
@@ -5,7 +5,7 @@ function [xList, errorList] = FalsePosition(f, p0, p1, errorAllowed)
 %
 
 	%Make sure the number of arguments is correct
-	if(narginchk(4, 4))
+	if(nargin ~= 4)
 		error('That is an incorrect number of arguments')
 	end
 	%A few necesary before we begin
diff --git a/Mullers.m b/Mullers.m
index b758c95..a14e90d 100644
--- a/Mullers.m
+++ b/Mullers.m
@@ -5,7 +5,7 @@ function [xList, functionValueList] = Mullers(f, p0, p1, p2, errorAllowed)
 %
 
 	%Make sure the number of arguments is correct
-	if(narginchk(5,5))
+	if(nargin ~= 5)
 		error('That is an incorrect number of arguments')
 	end
 	%A few necesary things before we get started
diff --git a/NewNewton.m b/NewNewton.m
index 8e07c1d..35a9ea3 100644
--- a/NewNewton.m
+++ b/NewNewton.m
@@ -5,7 +5,7 @@ function [xList, errorList] = NewNewton (f, startingValue, errorAllowed)
 %
 
 	%Make sure the number of arguments is correct
-	if(narginchk(3,3))
+	if(nargin ~= 3)
 		error('That is an incorrect number of arguments')
 	end
 	%A few necesary things before we get started
diff --git a/Secant.m b/Secant.m
index 0a5bd10..90559bd 100644
--- a/Secant.m
+++ b/Secant.m
@@ -5,7 +5,7 @@ function [xList, errorList] = Secant(f, p0, p1, errorAllowed)
 %
 
 	%Make sure the number of arguments is correct
-	if(narginchk(4,4))
+	if(nargin ~= 4)
 		error('That is an incorrect number of arguments')
 	end
 	%A few necesary things before we get started