2 files changed, 3 insertions, 4 deletions
diff --git a/README.md b/README.md
index cb99cfc..a0db7e5 100644
--- a/README.md
+++ b/README.md
@@ -56,13 +56,12 @@ numbers) or by `-` (for negative numbers).
 
 There is support for the five arithmetic operations `+`, `-`, `*`, `/`, `%` (with
 `%` the operands are automatically converted to integer) as well as the relational
-operations `!` (different), `<`, `>`:
+operations `<`, `>`:
 
     (- +5)                       ; -5
     (- +5 +3.2 +.6)              ; +1.2
     (< +2 +4 +6.8)               ; t
     (> +4 +8)                    ; f
-    (! +4 +4)                    ; f
 
 #### Random number operation
 
diff --git a/liblali.c b/liblali.c
index 80d27fc..efbcd3f 100644
--- a/liblali.c
+++ b/liblali.c
@@ -1027,7 +1027,7 @@ DEFINE_PRIMITIVE_ARITHMETIC(primitiveRemainder, %, "+1", atoi, int , "%d" , "+%d
     }                                                                        \
   }
 
-DEFINE_PRIMITIVE_RELATIONAL(primitiveDifferent,    !=, false)
+/* DEFINE_PRIMITIVE_RELATIONAL(primitiveDifferent,    !=, false) */
 /* DEFINE_PRIMITIVE_RELATIONAL(primitiveEqual,        ==, true) */
 DEFINE_PRIMITIVE_RELATIONAL(primitiveLess,         < , true)
 /* DEFINE_PRIMITIVE_RELATIONAL(primitiveLessEqual,    <=, true) */
@@ -1101,7 +1101,7 @@ Primitive primitives[] = {
   { "/",       1, -1, primitiveDivide       },
   { "%",       1, -1, primitiveRemainder    },
   /* { "=",       1, -1, primitiveEqual        }, */
-  { "!",       1, -1, primitiveDifferent    },
+  /* { "!",       1, -1, primitiveDifferent    }, */
   { "<",       1, -1, primitiveLess         },
   /* { "<=",      1, -1, primitiveLessEqual    }, */
   { ">",       1, -1, primitiveGreater      },