diff --git a/doc/langref.html.in b/doc/langref.html.in
index bd3641b8e2..3a5ca57b53 100644
--- a/doc/langref.html.in
+++ b/doc/langref.html.in
@@ -9421,14 +9421,17 @@ fn doTheTest() !void {
       Supports {#link|Floats#} and {#link|Vectors#} of floats.
       </p>
       {#header_close#}
-      {#header_open|@fabs#}
-      <pre>{#syntax#}@fabs(value: anytype) @TypeOf(value){#endsyntax#}</pre>
+      {#header_open|@abs#}
+      <pre>{#syntax#}@abs(value: anytype) anytype{#endsyntax#}</pre>
       <p>
-      Returns the absolute value of a floating point number. Uses a dedicated hardware instruction
+      Returns the absolute value of an integer or a floating point number. Uses a dedicated hardware instruction
       when available.
+
+      The return type is always an unsigned integer of the same bit width as the operand if the operand is an integer.
+      Unsigned integer operands are supported. The builtin cannot overflow for signed integer operands.
       </p>
       <p>
-      Supports {#link|Floats#} and {#link|Vectors#} of floats.
+      Supports {#link|Floats#}, {#link|Integers#} and {#link|Vectors#} of floats or integers.
       </p>
       {#header_close#}
       {#header_open|@floor#}