diff --git a/shootout/fasta/boot.sh b/shootout/fasta/boot.sh
index b723c7f69d4ebc53d635dd7c602c1adf4ea7cfe9..1e4675753653111f435289b255c8f5a440772056 100755
--- a/shootout/fasta/boot.sh
+++ b/shootout/fasta/boot.sh
@@ -13,7 +13,7 @@ HC=${3:-ghc}
 mode=${4:-norm}
 
 EXE=""
-if [[ $(shell uname -s | grep -c 'MSYS\|MINGW') -eq 1 ]]
+if [[ $(uname -s | grep -c 'MSYS\|MINGW') -eq 1 ]]
 then
   EXE=".exe"
 fi
@@ -46,4 +46,4 @@ ${output}/fasta-c${EXE} $MODE_ARGS | tr -d '\r' > ${output}/fasta.stdout
 # 	./fasta-c $(NORM_OPTS) | tr -d '\r' > $@
 
 # k-nucleotide.slowstdin : fasta-c
-# 	./fasta-c $(SLOW_OPTS) | tr -d '\r' > $@
\ No newline at end of file
+# 	./fasta-c $(SLOW_OPTS) | tr -d '\r' > $@
diff --git a/shootout/k-nucleotide/boot.sh b/shootout/k-nucleotide/boot.sh
index 6e9a4c1c370d81b42d89a07aeb854be11db5801f..c5736033aa3a5969879890079266b72ea39eb818 100755
--- a/shootout/k-nucleotide/boot.sh
+++ b/shootout/k-nucleotide/boot.sh
@@ -13,7 +13,7 @@ HC=${3:-ghc}
 mode=${4:-norm}
 
 EXE=""
-if [[ $(shell uname -s | grep -c 'MSYS\|MINGW') -eq 1 ]]
+if [[ $(uname -s | grep -c 'MSYS\|MINGW') -eq 1 ]]
 then
   EXE=".exe"
 fi
@@ -49,4 +49,4 @@ ${output}/fasta-c${EXE} $MODE_ARGS | tr -d '\r' > ${output}/${INPUT_FILE}
 # 	./fasta-c $(NORM_OPTS) | tr -d '\r' > $@
 
 # k-nucleotide.slowstdin : fasta-c
-# 	./fasta-c $(SLOW_OPTS) | tr -d '\r' > $@
\ No newline at end of file
+# 	./fasta-c $(SLOW_OPTS) | tr -d '\r' > $@
diff --git a/shootout/reverse-complement/boot.sh b/shootout/reverse-complement/boot.sh
index de7b3a64b06d66054628813823e3b9ff7bc86fa9..9b6fd8eaf0b76d2fa984487678385579c08762bd 100755
--- a/shootout/reverse-complement/boot.sh
+++ b/shootout/reverse-complement/boot.sh
@@ -13,7 +13,7 @@ HC=${3:-ghc}
 mode=${4:-norm}
 
 EXE=""
-if [[ $(shell uname -s | grep -c 'MSYS\|MINGW') -eq 1 ]]
+if [[ $(uname -s | grep -c 'MSYS\|MINGW') -eq 1 ]]
 then
   EXE=".exe"
 fi
diff --git a/spectral/awards/boot.sh b/spectral/awards/boot.sh
index f7f1c4e9859f72919281340159c3291ec013bf99..038f106228bd4488b44123c46b908e84af671792 100755
--- a/spectral/awards/boot.sh
+++ b/spectral/awards/boot.sh
@@ -13,7 +13,7 @@ HC=${3:-ghc}
 mode=${4:-norm}
 
 EXE=""
-if [[ $(shell uname -s | grep -c 'MSYS\|MINGW') -eq 1 ]]
+if [[ $(uname -s | grep -c 'MSYS\|MINGW') -eq 1 ]]
 then
   EXE=".exe"
 fi
diff --git a/spectral/banner/boot.sh b/spectral/banner/boot.sh
index a7480dad7123cb261c435bc75eb4b0f906ee4a02..bee76891eb6ecafa435ed21b96f8d4017ea75eff 100755
--- a/spectral/banner/boot.sh
+++ b/spectral/banner/boot.sh
@@ -13,7 +13,7 @@ HC=${3:-ghc}
 mode=${4:-norm}
 
 EXE=""
-if [[ $(shell uname -s | grep -c 'MSYS\|MINGW') -eq 1 ]]
+if [[ $(uname -s | grep -c 'MSYS\|MINGW') -eq 1 ]]
 then
   EXE=".exe"
 fi