diff --git a/src/test/c/Tim/test_hangman.c b/src/test/c/Tim/test_hangman.c
index 47f8e40..ecf68b8 100644
--- a/src/test/c/Tim/test_hangman.c
+++ b/src/test/c/Tim/test_hangman.c
@@ -95,59 +95,59 @@ void test_wordGuessed_differentCaps()
 void test_letterGuessed_differentCaps_small_big()
 {
     //arrange
-    char x ='F';
-    char y[] ="Kartoffel";
+    char bigLetter ='F';
+    char wordWithSmallLetter[] ="Kartoffel";
     int length = 9;
     //assert
-    TEST_ASSERT_TRUE(letterGuessed(x,y,length));
+    TEST_ASSERT_TRUE(letterGuessed(bigLetter,wordWithSmallLetter,length));
 }
 
 void test_letterGuessed_differentCaps_big_small()
 {
     //arrange
-    char x ='k';
-    char y[] ="Kartoffel";
+    char smallLetter ='k';
+    char wordWithBigLetter[] ="Kartoffel";
     int length = 9;
     //assert
-    TEST_ASSERT_TRUE(letterGuessed(x,y,length));
+    TEST_ASSERT_TRUE(letterGuessed(smallLetter,wordWithBigLetter,length));
 }
 void test_letterGuessed_sameCaps_small()
 {
     //arrange
-    char x ='f';
-    char y[] ="Kartoffel";
+    char smallLetter ='f';
+    char wordWithSmallLetter[] ="Kartoffel";
     int length = 9;
     //assert
-    TEST_ASSERT_TRUE(letterGuessed(x,y,length));
+    TEST_ASSERT_TRUE(letterGuessed(smallLetter,wordWithSmallLetter,length));
 }
 void test_letterGuessed_differentLetter_small()
 {
     //arrange
-    char x ='p';
+    char randomSmallLetter ='p';
     char y[] ="Kartoffel";
     int length = 9;
     //assert
-    TEST_ASSERT_FALSE(letterGuessed(x,y,length));
+    TEST_ASSERT_FALSE(letterGuessed(randomSmallLetter,y,length));
 }
 void test_letterGuessed_differentLetter_big()
 {
     //arrange
-    char x ='P';
+    char randomBigLetter ='P';
     char y[] ="Kartoffel";
     int length = 9;
     //assert
-    TEST_ASSERT_FALSE(letterGuessed(x,y,length));
+    TEST_ASSERT_FALSE(letterGuessed(randomBigLetter,y,length));
 }
 
 
 void test_letterGuessed_sameCaps_big()
 {
     //arrange
-    char x ='K';
-    char y[] ="Kartoffel";
+    char bigLetter ='K';
+    char wordWithBigLetter[] ="Kartoffel";
     int length = 9;
     //assert
-    TEST_ASSERT_TRUE(letterGuessed(x,y,length));
+    TEST_ASSERT_TRUE(letterGuessed(bigLetter,wordWithBigLetter,length));
 }
 
 void test_noTrysLeft_x_equals_POSSIBLE_TRYS()