diff --git a/src/InputController.mm b/src/InputController.mm
index 55cf023..efb9af5 100644
--- a/src/InputController.mm
+++ b/src/InputController.mm
@@ -194,7 +194,8 @@ - (void)commitComposition:(id)sender {
 
     if (commitWordWithSpace && text.length > 0) {
         char firstChar = [text characterAtIndex:0];
-        if (![[NSCharacterSet decimalDigitCharacterSet] characterIsMember:firstChar]) {
+        char lastChar = [text characterAtIndex:text.length - 1];
+        if (![[NSCharacterSet decimalDigitCharacterSet] characterIsMember:firstChar] && lastChar != '\'') {
             text = [NSString stringWithFormat:@"%@ ", text];
         }
     }