diff --git a/qt5-qtbase-5.12.1-firebird-4.0.0.patch b/qt5-qtbase-5.12.1-firebird-4.0.0.patch
new file mode 100644
index 0000000..9c09161
--- /dev/null
+++ b/qt5-qtbase-5.12.1-firebird-4.0.0.patch
@@ -0,0 +1,17 @@
+diff -up qtbase-everywhere-src-5.12.1/src/plugins/sqldrivers/configure.json.firebird qtbase-everywhere-src-5.12.1/src/plugins/sqldrivers/configure.json
+--- qtbase-everywhere-src-5.12.1/src/plugins/sqldrivers/configure.json.firebird	2019-01-28 11:11:52.000000000 -0600
++++ qtbase-everywhere-src-5.12.1/src/plugins/sqldrivers/configure.json	2019-02-03 13:41:27.392305128 -0600
+@@ -49,10 +49,11 @@
+         "ibase": {
+             "label": "InterBase",
+             "test": {},
+-            "headers": "ibase.h",
++            "headers": "ibase.h",
+             "sources": [
+                 { "libs": "-lgds32_ms", "condition": "config.win32" },
+-                { "libs": "-lgds", "condition": "!config.win32" }
++                { "libs": "-lgds", "condition": "!config.win32" },
++                { "libs": "-lfbclient", "condition": "!config.win32" }
+             ]
+         },
+         "mysql": {