diff --git a/linalg-practice.py b/linalg-practice.py
index 9f7c032..1f59dc8 100644
--- a/linalg-practice.py
+++ b/linalg-practice.py
@@ -38,11 +38,9 @@ def detcheck(a, b, rowcol, intmax):
 
 # invcheck function to check if the inverse of the matrix is correct
 def invcheck(a, b, rowcol, intmax):
-    det = a.det()
-    if det != 0 :
-        # return bool based on if input equals inverse of matrix
-        print("What is the inverse of this matrix?")
-        return (sp.Matrix(inmat(rowcol)) == a.inv())
+    # return bool based on if input equals inverse of matrix
+    print("What is the inverse of this matrix?")
+    return (sp.Matrix(inmat(rowcol)) == a.inv())
 
 # eigcheck function to check if the eigenvalues are correct
 def eigcheck(a, b, rowcol, intmax):
@@ -92,6 +90,9 @@ def practice(t) :
             if t == "diag" :
                 while not a.is_diagonalizable :
                     a = genmatrix(rowcol, intmax, dif)
+            if t == "inv" :
+                while a.det() == 0 :
+                    a = genmatrix(rowcol, intmax, dif)
             sp.pprint(a)
             # if return of function is True
             if f(a, b, rowcol, intmax) :