diff --git a/src/imfill.jl b/src/imfill.jl
index c137f6a7..89a70435 100644
--- a/src/imfill.jl
+++ b/src/imfill.jl
@@ -9,17 +9,23 @@
 
  Connected components of an image is found using flood-fill algorithm and returns a copy of
  the original image after filling objects that falls in the range of interval.
+ For filling objects, represent the holes(part to be filled) with True in your array.
 
 
  Parameters:
 
   -  img            = Input image (Boolean array type)
-  -  interval       = objects of size in this range will be filled with False (default value is (0,64) )
+  -  interval       = objects of size in this range will be filled with False
   -  connectivity   = connectivity takes the same values as in label_components (Default value is 1:ndims(img))
 
  """
 
-  function imfill(img::AbstractArray{Bool}, interval::Tuple{Real,Real}=(0,64), connectivity::Union{Dims, AbstractVector{Int}, BitArray}=1:ndims(img))
+  function imfill(img::AbstractArray{Bool}, interval::Tuple{Real,Real}, connectivity::Union{Dims, AbstractVector{Int}, BitArray}=1:ndims(img))
+
+     if interval[1] > interval[2] || interval[1] < 0 || interval[2] < 0
+ 	print("Invalid Interval")
+        return
+     end
 
      labels = label_components(img,connectivity)
 
diff --git a/test/runtests.jl b/test/runtests.jl
index 1fe2d75b..60ce8a30 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -135,4 +135,38 @@ using Test
                      0 0 0 0 0 0])
         @test thinning(img) == img
     end
+
+     @testset "imfill" begin
+	#2 Dimensional case
+        img = Bool.([0 0 0 0 0 0 1 0 0 0
+             	     0 1 1 1 1 1 0 0 0 0
+             	     0 1 0 0 1 1 0 0 0 0
+             	     0 1 1 1 0 1 0 0 0 0
+             	     0 1 1 1 1 1 0 0 0 0
+             	     0 0 0 0 0 0 0 1 1 1
+             	     0 0 0 0 0 0 0 1 0 1
+             	     0 0 0 0 0 0 0 1 1 1])
+        ans = Bool.([0 0 0 0 0 0 1 0 0 0
+             	     0 1 1 1 1 1 0 0 0 0
+             	     0 1 1 1 1 1 0 0 0 0
+             	     0 1 1 1 1 1 0 0 0 0
+             	     0 1 1 1 1 1 0 0 0 0
+             	     0 0 0 0 0 0 0 1 1 1
+             	     0 0 0 0 0 0 0 1 1 1
+             	     0 0 0 0 0 0 0 1 1 1])
+	@test imfill(.!img, (0,2)) == (.!ans)
+
+	#3 Dimensional case
+        A = zeros(Bool,3,10,10)
+	A[1,:,:] = img
+	A[2,:,:] = img
+	A[3,:,:] = img
+
+	B = zeros(Bool,3,10,10)
+	B[1,:,:] = ans
+	B[2,:,:] = ans
+	B[3,:,:] = ans
+
+	@test imfill(.!A, (0,2)) == (.!B)
+     end	
 end