diff --git a/rtl/aix/Makefile.fpc b/rtl/aix/Makefile.fpc
index 4f40730b63..2f51692654 100644
--- a/rtl/aix/Makefile.fpc
+++ b/rtl/aix/Makefile.fpc
@@ -301,6 +301,3 @@ initc$(PPUEXT) : $(SYSTEMUNIT)$(PPUEXT)
 console$(PPUEXT) : baseunix$(PPUEXT) termio$(PPUEXT)
         $(COMPILER) $<
 
-sortbase$(PPUEXT) : $(INC)/sortbase.pp objpas$(PPUEXT) $(SYSTEMUNIT)$(PPUEXT)
-	$(COMPILER) $(INC)/sortbase.pp
-
diff --git a/rtl/android/Makefile.fpc b/rtl/android/Makefile.fpc
index f4d05ea7dc..746a75a4b3 100644
--- a/rtl/android/Makefile.fpc
+++ b/rtl/android/Makefile.fpc
@@ -306,6 +306,3 @@ linux$(PPUEXT) : $(LINUXINC)/linux.pp $(SYSTEMUNIT)$(PPUEXT) baseunix$(PPUEXT) u
 linuxvcs$(PPUEXT) : $(LINUXINC)/linuxvcs.pp $(SYSTEMUNIT)$(PPUEXT) baseunix$(PPUEXT) strings$(PPUEXT)
         $(COMPILER) $(LINUXINC)/linuxvcs.pp
 
-sortbase$(PPUEXT) : $(INC)/sortbase.pp objpas$(PPUEXT) $(SYSTEMUNIT)$(PPUEXT)
-        $(COMPILER) $(INC)/sortbase.pp
-
diff --git a/rtl/dragonfly/Makefile.fpc b/rtl/dragonfly/Makefile.fpc
index cb9da656fb..c84d85cd5a 100644
--- a/rtl/dragonfly/Makefile.fpc
+++ b/rtl/dragonfly/Makefile.fpc
@@ -254,9 +254,6 @@ cpall$(PPUEXT): $(RTL)/charmaps/cpall.pas system$(PPUEXT) charset$(PPUEXT)
 fpwidestring$(PPUEXT): $(OBJPASDIR)/fpwidestring.pp character$(PPUEXT) unixcp$(PPUEXT)
         $(COMPILER) $(OBJPASDIR)/fpwidestring.pp
 
-sortbase$(PPUEXT) : $(INC)/sortbase.pp objpas$(PPUEXT) $(SYSTEMUNIT)$(PPUEXT)
-        $(COMPILER) $(INC)/sortbase.pp
-
 #
 # Other system-dependent RTL Units
 #
diff --git a/rtl/freebsd/Makefile.fpc b/rtl/freebsd/Makefile.fpc
index acf60175ed..72bf020415 100644
--- a/rtl/freebsd/Makefile.fpc
+++ b/rtl/freebsd/Makefile.fpc
@@ -320,6 +320,3 @@ bsd$(PPUEXT) : $(BSDINC)/bsd.pas initc$(PPUEXT) unix$(PPUEXT) syscall$(PPUEXT) $
 initc$(PPUEXT) : $(UNIXINC)/initc.pp ctypes$(PPUEXT) $(SYSTEMUNIT)$(PPUEXT)
         $(COMPILER) $<
 
-sortbase$(PPUEXT) : $(INC)/sortbase.pp objpas$(PPUEXT) $(SYSTEMUNIT)$(PPUEXT)
-        $(COMPILER) $<
-
diff --git a/rtl/go32v2/Makefile.fpc b/rtl/go32v2/Makefile.fpc
index 6c8b4403ee..74303a3985 100644
--- a/rtl/go32v2/Makefile.fpc
+++ b/rtl/go32v2/Makefile.fpc
@@ -241,9 +241,6 @@ character$(PPUEXT): $(OBJPASDIR)/character.pas sysutils$(PPUEXT) objpas$(PPUEXT)
 unicodedata$(PPUEXT) : $(OBJPASDIR)/unicodedata.pas system$(PPUEXT)
         $(COMPILER) -Fi$(OBJPASDIR) $(OBJPASDIR)/unicodedata.pas
 
-sortbase$(PPUEXT) : $(INC)/sortbase.pp objpas$(PPUEXT) $(SYSTEMUNIT)$(PPUEXT)
-	$(COMPILER) $<
-
 #
 # Other system-dependent RTL Units
 #
diff --git a/rtl/msxdos/Makefile.fpc b/rtl/msxdos/Makefile.fpc
index 38bab2692e..5238e08df5 100644
--- a/rtl/msxdos/Makefile.fpc
+++ b/rtl/msxdos/Makefile.fpc
@@ -205,9 +205,6 @@ character$(PPUEXT): $(OBJPASDIR)/character.pas sysutils$(PPUEXT) objpas$(PPUEXT)
 unicodedata$(PPUEXT) : $(OBJPASDIR)/unicodedata.pas objpas$(PPUEXT) system$(PPUEXT)
         $(COMPILER) -Fi$(OBJPASDIR) $(OBJPASDIR)/unicodedata.pas
 
-sortbase$(PPUEXT) : $(INC)/sortbase.pp objpas$(PPUEXT) $(SYSTEMUNIT)$(PPUEXT)
-	$(COMPILER) $<
-
 #
 # Other system-dependent RTL Units
 #
diff --git a/rtl/netbsd/Makefile.fpc b/rtl/netbsd/Makefile.fpc
index ea9447c6bd..311b308aa0 100644
--- a/rtl/netbsd/Makefile.fpc
+++ b/rtl/netbsd/Makefile.fpc
@@ -289,9 +289,6 @@ fpmkunit$(PPUEXT) : $(COMMON)/fpmkunit.pp classes$(PPUEXT) $(SYSTEMUNIT)$(PPUEXT
 fpwidestring$(PPUEXT): $(OBJPASDIR)/fpwidestring.pp character$(PPUEXT) unixcp$(PPUEXT)
         $(COMPILER) $(OBJPASDIR)/fpwidestring.pp
 
-sortbase$(PPUEXT) : $(INC)/sortbase.pp objpas$(PPUEXT) $(SYSTEMUNIT)$(PPUEXT)
-	$(COMPILER) $<
-
 #
 # Other system-dependent RTL Units
 #
diff --git a/rtl/netwlibc/Makefile.fpc b/rtl/netwlibc/Makefile.fpc
index bc1fefb8aa..e83bcd64b2 100644
--- a/rtl/netwlibc/Makefile.fpc
+++ b/rtl/netwlibc/Makefile.fpc
@@ -221,9 +221,6 @@ cmem$(PPUEXT) : $(INC)/cmem.pp $(SYSTEMUNIT)$(PPUEXT)
 
 ctypes$(PPUEXT) :  $(INC)/ctypes.pp $(SYSTEMUNIT)$(PPUEXT)
 
-sortbase$(PPUEXT) : $(INC)/sortbase.pp objpas$(PPUEXT) $(SYSTEMUNIT)$(PPUEXT)
-	$(COMPILER) $<
-
 #
 # Other system-dependent RTL Units
 #
diff --git a/rtl/openbsd/Makefile.fpc b/rtl/openbsd/Makefile.fpc
index 97fe913729..c7832cdb3d 100644
--- a/rtl/openbsd/Makefile.fpc
+++ b/rtl/openbsd/Makefile.fpc
@@ -322,9 +322,6 @@ bsd$(PPUEXT) : $(BSDINC)/bsd.pas initc$(PPUEXT) unix$(PPUEXT) syscall$(PPUEXT) $
 initc$(PPUEXT) : $(UNIXINC)/initc.pp ctypes$(PPUEXT) $(SYSTEMUNIT)$(PPUEXT)
         $(COMPILER) $<
 
-sortbase$(PPUEXT) : $(INC)/sortbase.pp objpas$(PPUEXT) $(SYSTEMUNIT)$(PPUEXT)
-	$(COMPILER) $<
-
 #
 # Other system-dependent RTL Units
 #
diff --git a/rtl/solaris/Makefile.fpc b/rtl/solaris/Makefile.fpc
index 5c1da9a85f..33c3799865 100644
--- a/rtl/solaris/Makefile.fpc
+++ b/rtl/solaris/Makefile.fpc
@@ -261,9 +261,6 @@ extpas$(PPUEXT) : $(INC)/extpas.pp dos$(PPUEXT) $(SYSTEMUNIT)$(PPUEXT)
 fpintres$(PPUEXT) : $(INC)/fpintres.pp $(SYSTEMUNIT)$(PPUEXT)
         $(COMPILER) $(INC)/fpintres.pp
 
-sortbase$(PPUEXT) : $(INC)/sortbase.pp objpas$(PPUEXT) $(SYSTEMUNIT)$(PPUEXT)
-	$(COMPILER) $<
-
 #
 # Other system-dependent RTL Units
 #
diff --git a/rtl/win16/Makefile.fpc b/rtl/win16/Makefile.fpc
index b2ca4f1c5d..ee9a755519 100644
--- a/rtl/win16/Makefile.fpc
+++ b/rtl/win16/Makefile.fpc
@@ -187,9 +187,6 @@ rtlconsts$(PPUEXT) : $(OBJPASDIR)/rtlconsts.pp $(OBJPASDIR)/rtlconst.inc objpas$
         $(COMPILER) -Fi$(OBJPASDIR) $(OBJPASDIR)/rtlconsts.pp
 	$(EXECPPAS)
 
-sortbase$(PPUEXT) : $(INC)/sortbase.pp objpas$(PPUEXT) system$(PPUEXT)
-	$(COMPILER) $<
-
 #
 # Other system-independent RTL Units
 #