diff --git a/src/bin/bash/Jamfile b/src/bin/bash/Jamfile
index bf9f73c8ef..cac0977bdc 100644
--- a/src/bin/bash/Jamfile
+++ b/src/bin/bash/Jamfile
@@ -2,10 +2,6 @@ SubDir HAIKU_TOP src bin bash ;
 
 SetSubDirSupportedPlatformsBeOSCompatible ;
 
-if $(TARGET_PLATFORM) != haiku {
-	UseHeaders [ FDirName $(HAIKU_TOP) headers posix ] : true ;
-}
-
 SubDirCcFlags -DHAVE_CONFIG_H -DPROGRAM='\"sh\"' -DCONF_HOSTTYPE='\"i586\"' -DCONF_OSTYPE='\"beos\"' -DCONF_MACHTYPE='\"i586-pc-beos\"' -DCONF_VENDOR='\"pc\"' -DSHELL ;
 
 # filter warnings we don't want here
diff --git a/src/bin/bash/lib/glob/Jamfile b/src/bin/bash/lib/glob/Jamfile
index befa0de79e..1efbd091bd 100644
--- a/src/bin/bash/lib/glob/Jamfile
+++ b/src/bin/bash/lib/glob/Jamfile
@@ -2,10 +2,6 @@ SubDir HAIKU_TOP src bin bash lib glob ;
 
 SetSubDirSupportedPlatformsBeOSCompatible ;
 
-if ! $(TARGET_PLATFORM_HAIKU_COMPATIBLE) {
-	UseHeaders [ FDirName $(HAIKU_TOP) headers posix ] : true ;
-}
-
 # filter warnings we don't want here
 TARGET_WARNING_CCFLAGS = [ FFilter $(TARGET_WARNING_CCFLAGS)
 	: -Wall -Wmissing-prototypes -Wsign-compare ] ;
diff --git a/src/bin/bash/lib/readline/Jamfile b/src/bin/bash/lib/readline/Jamfile
index 116ba7f07c..73b88042a0 100644
--- a/src/bin/bash/lib/readline/Jamfile
+++ b/src/bin/bash/lib/readline/Jamfile
@@ -2,10 +2,6 @@ SubDir HAIKU_TOP src bin bash lib readline ;
 
 SetSubDirSupportedPlatformsBeOSCompatible ;
 
-if ! $(TARGET_PLATFORM_HAIKU_COMPATIBLE) {
-	UseHeaders [ FDirName $(HAIKU_TOP) headers posix ] : true ;
-}
-
 # filter warnings we don't want here
 TARGET_WARNING_CCFLAGS = [ FFilter $(TARGET_WARNING_CCFLAGS)
 	: -Wall -Wmissing-prototypes -Wsign-compare ] ;
diff --git a/src/bin/bash/lib/sh/Jamfile b/src/bin/bash/lib/sh/Jamfile
index c581434423..2c25ead22b 100644
--- a/src/bin/bash/lib/sh/Jamfile
+++ b/src/bin/bash/lib/sh/Jamfile
@@ -2,10 +2,6 @@ SubDir HAIKU_TOP src bin bash lib sh ;
 
 SetSubDirSupportedPlatformsBeOSCompatible ;
 
-if ! $(TARGET_PLATFORM_HAIKU_COMPATIBLE) {
-	UseHeaders [ FDirName $(HAIKU_TOP) headers posix ] : true ;
-}
-
 # filter warnings we don't want here
 TARGET_WARNING_CCFLAGS = [ FFilter $(TARGET_WARNING_CCFLAGS)
 	: -Wall -Wmissing-prototypes -Wsign-compare ] ;