diff --git a/packages/proj4/namespaced/Kuvx.Proj.pas b/packages/proj4/namespaced/Kuvx.Proj.pas
new file mode 100644
index 0000000000..3ee443f698
--- /dev/null
+++ b/packages/proj4/namespaced/Kuvx.Proj.pas
@@ -0,0 +1,3 @@
+unit Kuvx.Proj;
+{$DEFINE FPC_DOTTEDUNITS}
+{$i proj.pas}
diff --git a/packages/proj4/namespaces.lst b/packages/proj4/namespaces.lst
new file mode 100644
index 0000000000..10689dda25
--- /dev/null
+++ b/packages/proj4/namespaces.lst
@@ -0,0 +1,3 @@
+src/proj.pas=namespaced/Kuvx.Proj.pas
+{s*:src/}=namespaced/
+{i+:src/}
diff --git a/packages/proj4/src/proj.pas b/packages/proj4/src/proj.pas
index 7a36bedfd6..87820654f1 100644
--- a/packages/proj4/src/proj.pas
+++ b/packages/proj4/src/proj.pas
@@ -32,7 +32,9 @@
  * DEALINGS IN THE SOFTWARE.
  ******************************************************************************)
 
+{$IFNDEF FPC_DOTTEDUNITS}
 unit proj;
+{$ENDIF FPC_DOTTEDUNITS}
 
 {$mode objfpc}
 {$MINENUMSIZE 4}
@@ -40,8 +42,13 @@ unit proj;
 
 interface
 
+{$IFDEF FPC_DOTTEDUNITS}
+uses
+  System.CTypes;
+{$ELSE FPC_DOTTEDUNITS}
 uses
   ctypes;
+{$ENDIF FPC_DOTTEDUNITS}
 
 {$IFDEF WINDOWS}
   {$DEFINE DYNLINK}