diff --git a/build/math.js b/build/math.js
index 3fe3ee0..69b849f 100644
--- a/build/math.js
+++ b/build/math.js
@@ -2980,9 +2980,7 @@ function floor( x ) {
 
 function sign( x ) {
 
-  if ( isZero(x) )
-    if ( isComplex(x) ) return complex(0);
-    else return 0;
+  if ( isZero(x) ) return x;
 
   return div( x, abs(x) );
 
diff --git a/src/functions/miscellaneous.js b/src/functions/miscellaneous.js
index af10c4c..9ae78e0 100644
--- a/src/functions/miscellaneous.js
+++ b/src/functions/miscellaneous.js
@@ -43,9 +43,7 @@ function floor( x ) {
 
 function sign( x ) {
 
-  if ( isZero(x) )
-    if ( isComplex(x) ) return complex(0);
-    else return 0;
+  if ( isZero(x) ) return x;
 
   return div( x, abs(x) );