diff --git a/src/business/business-core/gncBillTerm.c b/src/business/business-core/gncBillTerm.c
index a9c77c7828..adfeb91170 100644
--- a/src/business/business-core/gncBillTerm.c
+++ b/src/business/business-core/gncBillTerm.c
@@ -9,9 +9,9 @@
 #include <glib.h>
 
 #include "messages.h"
+#include "gnc-book.h"
 #include "gnc-numeric.h"
 #include "gnc-engine-util.h"
-#include "gnc-book-p.h"
 #include "GNCIdP.h"
 #include "QueryObject.h"
 #include "gnc-event-p.h"
diff --git a/src/business/business-core/gncBusiness.c b/src/business/business-core/gncBusiness.c
index e7a8253a55..7bbcbf3d27 100644
--- a/src/business/business-core/gncBusiness.c
+++ b/src/business/business-core/gncBusiness.c
@@ -9,7 +9,8 @@
 #include <glib.h>
 
 #include "gncBusiness.h"
-#include "gnc-book-p.h"
+#include "gnc-book.h"
+#include "GNCIdP.h"
 
 struct _iterate {
   foreachObjectCB cb;
diff --git a/src/business/business-core/gncBusiness.h b/src/business/business-core/gncBusiness.h
index 7315b6c918..87b9db17e3 100644
--- a/src/business/business-core/gncBusiness.h
+++ b/src/business/business-core/gncBusiness.h
@@ -7,6 +7,7 @@
 #ifndef GNC_BUSINESS_H_
 #define GNC_BUSINESS_H_
 
+#include "gnc-book.h"
 #include "gncObject.h"
 #include "GNCId.h"
 
diff --git a/src/business/business-core/gncCustomer.c b/src/business/business-core/gncCustomer.c
index 1f4352315d..b14d91a9c1 100644
--- a/src/business/business-core/gncCustomer.c
+++ b/src/business/business-core/gncCustomer.c
@@ -12,7 +12,7 @@
 #include "messages.h"
 #include "gnc-engine-util.h"
 #include "GNCIdP.h"
-#include "gnc-book-p.h"
+#include "gnc-book.h"
 #include "gnc-commodity.h"
 #include "gnc-numeric.h"
 #include "gncObject.h"
diff --git a/src/business/business-core/gncEmployee.c b/src/business/business-core/gncEmployee.c
index 5bd5e3d91f..a767cf2e8e 100644
--- a/src/business/business-core/gncEmployee.c
+++ b/src/business/business-core/gncEmployee.c
@@ -11,7 +11,7 @@
 
 #include "guid.h"
 #include "messages.h"
-#include "gnc-book-p.h"
+#include "gnc-book.h"
 #include "gnc-commodity.h"
 #include "gnc-engine-util.h"
 #include "GNCIdP.h"
diff --git a/src/business/business-core/gncEntry.c b/src/business/business-core/gncEntry.c
index 62794b7238..dfd8e891c4 100644
--- a/src/business/business-core/gncEntry.c
+++ b/src/business/business-core/gncEntry.c
@@ -9,7 +9,7 @@
 #include <glib.h>
 
 #include "messages.h"
-#include "gnc-book-p.h"
+#include "gnc-book.h"
 #include "gnc-commodity.h"
 #include "gnc-engine-util.h"
 #include "gnc-event-p.h"
diff --git a/src/business/business-core/gncInvoice.c b/src/business/business-core/gncInvoice.c
index 2085c31ab5..9d9724b8bb 100644
--- a/src/business/business-core/gncInvoice.c
+++ b/src/business/business-core/gncInvoice.c
@@ -14,7 +14,7 @@
 #include "gnc-numeric.h"
 #include "kvp_frame.h"
 #include "gnc-engine-util.h"
-#include "gnc-book-p.h"
+#include "gnc-book.h"
 #include "GNCIdP.h"
 #include "QueryObject.h"
 #include "gnc-event-p.h"
diff --git a/src/business/business-core/gncJob.c b/src/business/business-core/gncJob.c
index f4c6ebc80d..47a9c3bc9e 100644
--- a/src/business/business-core/gncJob.c
+++ b/src/business/business-core/gncJob.c
@@ -13,7 +13,7 @@
 #include "messages.h"
 #include "gnc-engine-util.h"
 #include "gnc-numeric.h"
-#include "gnc-book-p.h"
+#include "gnc-book.h"
 #include "GNCIdP.h"
 #include "QueryObject.h"
 #include "gnc-event-p.h"
diff --git a/src/business/business-core/gncOrder.c b/src/business/business-core/gncOrder.c
index 91941f0ec6..c9a14aee8e 100644
--- a/src/business/business-core/gncOrder.c
+++ b/src/business/business-core/gncOrder.c
@@ -12,7 +12,7 @@
 #include "gnc-numeric.h"
 #include "kvp_frame.h"
 #include "gnc-engine-util.h"
-#include "gnc-book-p.h"
+#include "gnc-book.h"
 #include "GNCIdP.h"
 #include "QueryObject.h"
 #include "gnc-event-p.h"
diff --git a/src/business/business-core/gncTaxTable.c b/src/business/business-core/gncTaxTable.c
index 711ff81894..2bedb29e41 100644
--- a/src/business/business-core/gncTaxTable.c
+++ b/src/business/business-core/gncTaxTable.c
@@ -11,7 +11,7 @@
 #include "messages.h"
 #include "gnc-numeric.h"
 #include "gnc-engine-util.h"
-#include "gnc-book-p.h"
+#include "gnc-book.h"
 #include "GNCIdP.h"
 #include "QueryObject.h"
 #include "gnc-event-p.h"
diff --git a/src/business/business-core/gncVendor.c b/src/business/business-core/gncVendor.c
index 6323f3d0ac..7e5fa951e4 100644
--- a/src/business/business-core/gncVendor.c
+++ b/src/business/business-core/gncVendor.c
@@ -11,7 +11,7 @@
 
 #include "guid.h"
 #include "messages.h"
-#include "gnc-book-p.h"
+#include "gnc-book.h"
 #include "gnc-commodity.h"
 #include "gnc-engine-util.h"
 #include "gnc-event-p.h"