diff --git a/lib/nib/positions.styl b/lib/nib/positions.styl
index 654d4440..3b412edf 100644
--- a/lib/nib/positions.styl
+++ b/lib/nib/positions.styl
@@ -4,17 +4,20 @@
   i = 0
   position: unquote(type)
   {args[i]}: args[i + 1] is a 'unit' ? args[i += 1] : 0
-  {args[i += 1]}: args[i + 1] is a 'unit' ? args[i += 1] : 0
+  if args[i+1]
+    {args[i += 1]}: args[i + 1] is a 'unit' ? args[i += 1] : 0
 
 /*
  * Position utility.
  * 
  * Synopsis:
  * 
- *   fixed: <pos> [n] <pos> [n]
+ *   fixed: <pos> [n] [<pos> [n]]
  * 
  * Examples:
  * 
+ *     fixed: top
+ *     fixed: top 5px
  *     fixed: top left
  *     fixed: top 5px left
  *     fixed: top left 5px
@@ -30,10 +33,12 @@ fixed()
  * 
  * Synopsis:
  * 
- *   absolute: <pos> [n] <pos> [n]
+ *   absolute: <pos> [n] [<pos> [n]]
  * 
  * Examples:
  * 
+ *     absolute: top
+ *     absolute: top 5px
  *     absolute: top left
  *     absolute: top 5px left
  *     absolute: top left 5px
@@ -49,10 +54,12 @@ absolute()
  * 
  * Synopsis:
  * 
- *   relative: <pos> [n] <pos> [n]
+ *   relative: <pos> [n] [<pos> [n]]
  * 
  * Examples:
  * 
+ *     relative: top
+ *     relative: top 5px
  *     relative: top left
  *     relative: top 5px left
  *     relative: top left 5px
diff --git a/test/cases/absolute.css b/test/cases/absolute.css
index 661df5d1..65157482 100644
--- a/test/cases/absolute.css
+++ b/test/cases/absolute.css
@@ -1,10 +1,28 @@
 #login {
   position: absolute;
-  bottom: 0;
-  right: 0;
+  top: 0;
 }
 #login {
   position: absolute;
   top: 5px;
+}
+#login {
+  position: absolute;
+  top: 0;
+  left: 0;
+}
+#login {
+  position: absolute;
+  top: 5px;
+  left: 10px;
+}
+#login {
+  position: absolute;
+  top: 0;
   left: 10px;
-}
\ No newline at end of file
+}
+#login {
+  position: absolute;
+  top: 5px;
+  left: 0;
+}
diff --git a/test/cases/absolute.styl b/test/cases/absolute.styl
index a4f789d5..79f4b52b 100644
--- a/test/cases/absolute.styl
+++ b/test/cases/absolute.styl
@@ -2,7 +2,19 @@
 @import 'nib/positions'
 
 #login
-  absolute bottom right
+  absolute: top
 
 #login
-  absolute top 5px left 10px
\ No newline at end of file
+  absolute: top 5px
+
+#login
+  absolute: top left
+
+#login
+  absolute: top 5px left 10px
+
+#login
+  absolute: top left 10px
+
+#login
+  absolute: top 5px left
\ No newline at end of file
diff --git a/test/cases/fixed.css b/test/cases/fixed.css
index 4320c328..62a21472 100644
--- a/test/cases/fixed.css
+++ b/test/cases/fixed.css
@@ -1,7 +1,15 @@
 #login {
   position: fixed;
-  bottom: 0;
-  right: 0;
+  top: 0;
+}
+#login {
+  position: fixed;
+  top: 5px;
+}
+#login {
+  position: fixed;
+  top: 0;
+  left: 0;
 }
 #login {
   position: fixed;
@@ -10,11 +18,11 @@
 }
 #login {
   position: fixed;
-  bottom: 0;
+  top: 0;
   left: 10px;
 }
 #login {
   position: fixed;
-  bottom: 10px;
-  right: 0;
-}
\ No newline at end of file
+  top: 5px;
+  left: 0;
+}
diff --git a/test/cases/fixed.styl b/test/cases/fixed.styl
index c3c9172b..5c257f19 100644
--- a/test/cases/fixed.styl
+++ b/test/cases/fixed.styl
@@ -2,13 +2,19 @@
 @import 'nib/positions'
 
 #login
-  fixed: bottom right
+  fixed: top
+
+#login
+  fixed: top 5px
+
+#login
+  fixed: top left
 
 #login
   fixed: top 5px left 10px
 
 #login
-  fixed: bottom left 10px
+  fixed: top left 10px
 
 #login
-  fixed: bottom 10px right
+  fixed: top 5px left
\ No newline at end of file
diff --git a/test/cases/relative.css b/test/cases/relative.css
index 389aa3b6..66720425 100644
--- a/test/cases/relative.css
+++ b/test/cases/relative.css
@@ -1,5 +1,28 @@
-
 #login {
   position: relative;
+  top: 0;
+}
+#login {
+  position: relative;
+  top: 5px;
+}
+#login {
+  position: relative;
+  top: 0;
+  left: 0;
+}
+#login {
+  position: relative;
+  top: 5px;
   left: 10px;
-}
\ No newline at end of file
+}
+#login {
+  position: relative;
+  top: 0;
+  left: 10px;
+}
+#login {
+  position: relative;
+  top: 5px;
+  left: 0;
+}
diff --git a/test/cases/relative.styl b/test/cases/relative.styl
new file mode 100644
index 00000000..68d39450
--- /dev/null
+++ b/test/cases/relative.styl
@@ -0,0 +1,20 @@
+
+@import 'nib/positions'
+
+#login
+  relative: top
+
+#login
+  relative: top 5px
+
+#login
+  relative: top left
+
+#login
+  relative: top 5px left 10px
+
+#login
+  relative: top left 10px
+
+#login
+  relative: top 5px left
\ No newline at end of file