diff --git a/ChangeLog b/ChangeLog
index 3655c07d..f8a2fc72 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+2010-08-03  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
+
+	Fix build failure with AIX sh due to shell quoting error.
+	* libltdl/config/ltmain.m4sh (func_append_quoted): Document
+	that this function inserts a separator space.
+	(func_mode_compile): Do not pass extra space here.
+	Fixes regression introduced in v2.2.10-49-gc13532a.
+	Report by Rainer Tammer.
+
 2010-08-02  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
 
 	Fix pic_flag test unportabilities.
diff --git a/libltdl/config/ltmain.m4sh b/libltdl/config/ltmain.m4sh
index 897a5e89..193ff1a4 100644
--- a/libltdl/config/ltmain.m4sh
+++ b/libltdl/config/ltmain.m4sh
@@ -157,7 +157,8 @@ func_append ()
 } # func_append may be replaced by extended shell implementation
 
 # func_append_quoted var value
-# Quote VALUE and append to the end of shell variable VAR.
+# Quote VALUE and append to the end of shell variable VAR, separated
+# by a space.
 func_append_quoted ()
 {
     func_quote_for_eval "${2}"
@@ -710,7 +711,7 @@ func_mode_compile ()
 	  save_ifs="$IFS"; IFS=','
 	  for arg in $args; do
 	    IFS="$save_ifs"
-	    func_append_quoted lastarg " $arg"
+	    func_append_quoted lastarg "$arg"
 	  done
 	  IFS="$save_ifs"
 	  func_stripname ' ' '' "$lastarg"