diff --git a/PocoDoc/cfg/mkdoc-poco.xml b/PocoDoc/cfg/mkdoc-poco.xml
index 8c729cb55..1045e172e 100644
--- a/PocoDoc/cfg/mkdoc-poco.xml
+++ b/PocoDoc/cfg/mkdoc-poco.xml
@@ -36,6 +36,7 @@
 				-I/usr/local/ssl/include,
 				-I/usr/local/mysql/include,
 				-I/usr/include/mysql,
+				-I/usr/include/postgres,
 				-D_DEBUG,
 				-E,
 				-C,
diff --git a/PocoDoc/cfg/mkdocumentation.xml b/PocoDoc/cfg/mkdocumentation.xml
index 74553a98c..9f47963d1 100644
--- a/PocoDoc/cfg/mkdocumentation.xml
+++ b/PocoDoc/cfg/mkdocumentation.xml
@@ -34,6 +34,7 @@
 				${Includes},
 				-I/usr/local/mysql/include,
 				-I/usr/include/mysql,
+				-I/usr/include/postgres,
 				-D_DEBUG,
 				-E,
 				-C,