diff --git a/build/rules_common.mk b/build/rules_common.mk
index c886ca0f801..32ce8086b51 100644
--- a/build/rules_common.mk
+++ b/build/rules_common.mk
@@ -32,7 +32,7 @@ mkinstalldirs = $(top_srcdir)/build/shtool mkdir -p
 INSTALL = $(top_srcdir)/build/shtool install -c
 INSTALL_DATA = $(INSTALL) -m 644
 
-DEFS = -I. -I$(srcdir) -I$(top_builddir)/main
+DEFS = -I. -I$(srcdir) -I$(top_builddir)/main -I$(top_srcdir)
 
 moduledir    = $(EXTENSION_DIR)
 
diff --git a/configure.in b/configure.in
index 58432aecbbb..13f4f61c832 100644
--- a/configure.in
+++ b/configure.in
@@ -669,7 +669,7 @@ else
 fi
 
 if test "$abs_srcdir" != "$abs_builddir"; then
-  INCLUDES="$INCLUDES -I\$(top_srcdir)/main -I\$(top_srcdir)/Zend -I\$(top_srcdir)"
+  INCLUDES="$INCLUDES -I\$(top_srcdir)/main -I\$(top_srcdir)/Zend"
   INCLUDES="$INCLUDES -I\$(top_srcdir)/TSRM"
 fi