diff --git a/reactos/drivers/storage/ide/pciidex/pciidex.def b/reactos/drivers/storage/ide/pciidex/pciidex.def
deleted file mode 100644
index 5f810fe1d0e..00000000000
--- a/reactos/drivers/storage/ide/pciidex/pciidex.def
+++ /dev/null
@@ -1,8 +0,0 @@
-LIBRARY pciidex.sys
-
-EXPORTS
-PciIdeXGetBusData@16
-PciIdeXInitialize@16
-PciIdeXSetBusData@20
-
-;EOF
\ No newline at end of file
diff --git a/reactos/drivers/storage/ide/pciidex/pciidex.rbuild b/reactos/drivers/storage/ide/pciidex/pciidex.rbuild
index 5aa07d10e5e..0691c33b3cf 100644
--- a/reactos/drivers/storage/ide/pciidex/pciidex.rbuild
+++ b/reactos/drivers/storage/ide/pciidex/pciidex.rbuild
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <!DOCTYPE module SYSTEM "../../../../tools/rbuild/project.dtd">
 <module name="pciidex" type="kernelmodedriver" installbase="system32/drivers" installname="pciidex.sys">
-	<importlibrary definition="pciidex.def" />
+	<importlibrary definition="pciidex.spec.def" />
 	<library>ntoskrnl</library>
 	<file>fdo.c</file>
 	<file>miniport.c</file>
@@ -9,4 +9,5 @@
 	<file>pciidex.c</file>
 	<file>pdo.c</file>
 	<file>pciidex.rc</file>
+	<file>pciidex.spec</file>
 </module>
diff --git a/reactos/drivers/storage/ide/pciidex/pciidex.spec b/reactos/drivers/storage/ide/pciidex/pciidex.spec
new file mode 100644
index 00000000000..b31793550f3
--- /dev/null
+++ b/reactos/drivers/storage/ide/pciidex/pciidex.spec
@@ -0,0 +1,3 @@
+@ stdcall PciIdeXGetBusData(ptr ptr long long)
+@ stdcall PciIdeXInitialize(ptr ptr ptr long)
+@ stdcall PciIdeXSetBusData(ptr ptr ptr long long)