diff --git a/maths/modular_inverse.nim b/maths/modular_inverse.nim
index 4b9d0b87..234cb2ab 100644
--- a/maths/modular_inverse.nim
+++ b/maths/modular_inverse.nim
@@ -67,7 +67,7 @@ when isMainModule:
       check modularInverse(17, 17).is_none()
 
     randomize()
-    const randomTestSize = 1000
+    const randomTestSize = 10
     for testNum in 0..randomTestSize:
       let a = rand(-10000000..10000000)
       let modulus = rand(1..1000000)
diff --git a/strings/check_anagram.nim b/strings/check_anagram.nim
index 9a3ef7ba..d3dbdd19 100644
--- a/strings/check_anagram.nim
+++ b/strings/check_anagram.nim
@@ -59,7 +59,7 @@ func toLowerUnchecked(c: char): char {.inline.} =
   # 0b100_0001, so setting the sixth bit to 1 gives letter's lowercase pair.
   char(uint8(c) or 0b0010_0000'u8)
 
-template normalizeChar(c: char) =
+template normalizeChar(c: char): char =
   ## Checks if the character is a letter and lowers its case.
   ##
   ## Raises a `ValueError` on other characters.