diff --git a/src/console.cpp b/src/console.cpp
index 350dd95fdb..0be9c8cbae 100644
--- a/src/console.cpp
+++ b/src/console.cpp
@@ -696,8 +696,9 @@ IConsoleAlias *IConsoleAliasGet(const char *name)
 /** copy in an argument into the aliasstream */
 static inline int IConsoleCopyInParams(char *dst, const char *src, uint bufpos)
 {
-	int len = min(ICON_MAX_STREAMSIZE - bufpos, (uint)strlen(src));
-	strecpy(dst, src, dst + len - 1);
+	/* len is the amount of bytes to add excluding the '\0'-termination */
+	int len = min(ICON_MAX_STREAMSIZE - bufpos - 1, (uint)strlen(src));
+	strecpy(dst, src, dst + len);
 
 	return len;
 }