diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8d00a4cd..1426b72d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,10 @@
 - GDB commander: add an option allowing to set the path to the gdb binary. (#73)
 - Search results: use GNU style messages. (#84)
 
+## Bugs fixed
+
+- GDB comm&nder: 5 empty arguments were passed to the main function called by libc. (#86)
+
 # v3.9.11
 
 ## Regressions fixed
diff --git a/src/u_gdb.pas b/src/u_gdb.pas
index 44ee30de..6b33f8f9 100644
--- a/src/u_gdb.pas
+++ b/src/u_gdb.pas
@@ -2065,6 +2065,7 @@ begin
   end;
   if DirectoryExists(fSyms.expand(o.workingDirectory)) then
     gdbCommand('-environment-cd ' + fSyms.expand(o.workingDirectory));
+  str := ' ';
   if not o.arguments.Count.equals(0) or o.queryArguments then
   begin
     str := '';