diff --git a/mingw-filesystem.spec b/mingw-filesystem.spec
index 07e8a82..d3fd47b 100644
--- a/mingw-filesystem.spec
+++ b/mingw-filesystem.spec
@@ -6,8 +6,8 @@
 %global macrosdir %(d=%{_rpmconfigdir}/macros.d; [ -d $d ] || d=%{_sysconfdir}/rpm; echo $d)
 
 Name:           mingw-filesystem
-Version:        110
-Release:        2%{?dist}
+Version:        111
+Release:        1%{?dist}
 Summary:        MinGW cross compiler base filesystem and environment
 
 License:        GPLv2+
@@ -317,6 +317,9 @@ install -m 0644 %{SOURCE19} $RPM_BUILD_ROOT%{_datadir}/mingw/
 
 
 %changelog
+* Fri May 01 2020 David Woodhouse <dwmw2@infradead.org> - 111-1
+- Quote tr sequences like '[blank]' to prevent the shell from doing so (#1830233)
+
 * Wed Jan 29 2020 Fedora Release Engineering <releng@fedoraproject.org>
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_32_Mass_Rebuild
 
diff --git a/mingw-find-provides.sh b/mingw-find-provides.sh
index 30c6150..1bcb2da 100755
--- a/mingw-find-provides.sh
+++ b/mingw-find-provides.sh
@@ -11,10 +11,10 @@ fi
 
 filelist=`sed "s/['\"]/\\\&/g"`
 
-dlls=$(echo $filelist | tr [:blank:] '\n' | grep '\.dll$')
+dlls=$(echo $filelist | tr '[:blank:]' '\n' | grep '\.dll$')
 
 for f in $dlls; do
-    basename=`basename $f | tr [:upper:] [:lower:]`
+    basename=`basename $f | tr '[:upper:]' '[:lower:]'`
     for target in $targets; do
         host_triplet=`rpm --eval "%{${target}_target}"`
         [[ $f =~ .*$host_triplet.* ]] && echo "$target($basename)"
diff --git a/mingw-find-requires.sh b/mingw-find-requires.sh
index 84686c1..d824272 100755
--- a/mingw-find-requires.sh
+++ b/mingw-find-requires.sh
@@ -15,8 +15,8 @@ fi
 
 filelist=`sed "s/['\"]/\\\&/g"`
 
-dlls=$(echo $filelist | tr [:blank:] '\n' | grep -Ei '\.(dll|exe)$')
-pkgconfig_files=$(echo $filelist | tr [:blank:] '\n' | grep -Ei '\.(pc)$')
+dlls=$(echo $filelist | tr '[:blank:]' '\n' | grep -Ei '\.(dll|exe)$')
+pkgconfig_files=$(echo $filelist | tr '[:blank:]' '\n' | grep -Ei '\.(pc)$')
 
 for target in $targets; do
 	dll_found=false
@@ -24,7 +24,7 @@ for target in $targets; do
 	for f in $dlls; do
 		if [[ $f =~ .*$host_triplet.* ]]; then
 			$OBJDUMP -p $f | grep 'DLL Name' | grep -Eio '[-._\+[:alnum:]]+\.dll' |
-				tr [:upper:] [:lower:] |
+				tr '[:upper:]' '[:lower:]' |
 				sed "s/\(.*\)/$target(\1)/"
 			dll_found=true
 		fi