diff --git a/Essentials/src/main/java/com/earth2me/essentials/textreader/KeywordReplacer.java b/Essentials/src/main/java/com/earth2me/essentials/textreader/KeywordReplacer.java
index e658a256a27..93dafa85dd0 100644
--- a/Essentials/src/main/java/com/earth2me/essentials/textreader/KeywordReplacer.java
+++ b/Essentials/src/main/java/com/earth2me/essentials/textreader/KeywordReplacer.java
@@ -383,7 +383,7 @@ private String replaceLine(String line, final String fullMatch, final String[] m
 
                 if (this.replaceSpacesWithUnderscores) {
                     // Don't replace spaces with underscores in command nor escape underscores.
-                    if (line.startsWith("/")) {
+                    if (!line.startsWith("/")) {
                         replacer = replacer.replace("_", "\\_").replaceAll("\\s", "_");
                     }
                 }