diff --git a/src/plugins/debugger/gdb/gdbengine.cpp b/src/plugins/debugger/gdb/gdbengine.cpp
index 49cad1dc95940d97c1d2e211adada097a486e673..7a005ec5f5e1f96f6ae47116db11a6edc3c4a971 100644
--- a/src/plugins/debugger/gdb/gdbengine.cpp
+++ b/src/plugins/debugger/gdb/gdbengine.cpp
@@ -3813,7 +3813,7 @@ void GdbEngine::fetchDisassemblerByAddressCli(DisassemblerViewAgent *agent)
     quint64 address = agent->address().toULongLong(&ok, 0);
     QByteArray start = QByteArray::number(address - 20, 16);
     QByteArray end = QByteArray::number(address + 100, 16);
-    QByteArray cmd = "disassemble 0x" + start + " 0x" + end;
+    QByteArray cmd = "disassemble 0x" + start + ",0x" + end;
     postCommand(cmd, Discardable, CB(handleFetchDisassemblerByCli),
         QVariant::fromValue(DisassemblerAgentCookie(agent)));
 }