diff --git a/configure b/configure
index 03e9e18..e5e561d 100755
--- a/configure
+++ b/configure
@@ -21918,7 +21918,7 @@ fi
     ;;
   linux*)
     if test x"$host_cpu" = "xx86_64"; then
-      VICEDIR="$PREFIX/lib64/vice"
+      VICEDIR="$PREFIX/lib/vice"
        if false; then
   ALTERNATE_DOCDIR_TRUE=
   ALTERNATE_DOCDIR_FALSE='#'
diff --git a/configure.ac b/configure.ac
index bc0da30..53d867e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3012,12 +3012,7 @@ if test x"$enable_lame" != "xno" ; then
   fi
 fi
 
-AC_PATH_PROGS(FCCACHE, fc-cache, false)
-if test x"$FCCACHE" = "xfalse"; then
-  AM_CONDITIONAL(HAVE_FC_CACHE, false)
-else
-  AM_CONDITIONAL(HAVE_FC_CACHE, true)
-fi
+AM_CONDITIONAL(HAVE_FC_CACHE, false)
 
 if test x"$is_amigaos4" = "xyes"; then
   dnl for AmigaOS4 native resid needs to be configured without dependency tracking
@@ -4060,7 +4055,7 @@ case "$host_os" in
     ;;
   linux*)
     if test x"$host_cpu" = "xx86_64"; then
-      VICEDIR="$PREFIX/lib64/vice"
+      VICEDIR="$PREFIX/lib/vice"
       AM_CONDITIONAL(ALTERNATE_DOCDIR, false)
     else
       VICEDIR="$PREFIX/lib/vice"
diff --git a/configure.proto b/configure.proto
index 4204eda..775450a 100755
--- a/configure.proto
+++ b/configure.proto
@@ -3012,12 +3012,7 @@ if test x"$enable_lame" != "xno" ; then
   fi
 fi
 
-AC_PATH_PROGS(FCCACHE, fc-cache, false)
-if test x"$FCCACHE" = "xfalse"; then
-  AM_CONDITIONAL(HAVE_FC_CACHE, false)
-else
-  AM_CONDITIONAL(HAVE_FC_CACHE, true)
-fi
+AM_CONDITIONAL(HAVE_FC_CACHE, false)
 
 if test x"$is_amigaos4" = "xyes"; then
   dnl for AmigaOS4 native resid needs to be configured without dependency tracking
@@ -4060,7 +4055,7 @@ case "$host_os" in
     ;;
   linux*)
     if test x"$host_cpu" = "xx86_64"; then
-      VICEDIR="$PREFIX/lib64/vice"
+      VICEDIR="$PREFIX/lib/vice"
       AM_CONDITIONAL(ALTERNATE_DOCDIR, false)
     else
       VICEDIR="$PREFIX/lib/vice"