diff --git a/board/a9m2410/env/bin/_update b/board/a9m2410/env/bin/_update
index fb7cbe8..014bce3 100644
--- a/board/a9m2410/env/bin/_update
+++ b/board/a9m2410/env/bin/_update
@@ -5,7 +5,7 @@
 	exit 1
 fi
 
-if [ \! -e "$part" ]; then
+if [ ! -e "$part" ]; then
 	echo "Partition $part does not exist"
 	exit 1
 fi
diff --git a/board/a9m2440/env/bin/_update b/board/a9m2440/env/bin/_update
index e76eac9..b10682e 100644
--- a/board/a9m2440/env/bin/_update
+++ b/board/a9m2440/env/bin/_update
@@ -5,7 +5,7 @@
 	exit 1
 fi
 
-if [ \! -e "$part" ]; then
+if [ ! -e "$part" ]; then
 	echo "Partition $part does not exist"
 	exit 1
 fi
diff --git a/board/at91sam9260ek/env/bin/_update b/board/at91sam9260ek/env/bin/_update
index fb7cbe8..014bce3 100644
--- a/board/at91sam9260ek/env/bin/_update
+++ b/board/at91sam9260ek/env/bin/_update
@@ -5,7 +5,7 @@
 	exit 1
 fi
 
-if [ \! -e "$part" ]; then
+if [ ! -e "$part" ]; then
 	echo "Partition $part does not exist"
 	exit 1
 fi
diff --git a/board/at91sam9263ek/env/bin/_update b/board/at91sam9263ek/env/bin/_update
index fb7cbe8..014bce3 100644
--- a/board/at91sam9263ek/env/bin/_update
+++ b/board/at91sam9263ek/env/bin/_update
@@ -5,7 +5,7 @@
 	exit 1
 fi
 
-if [ \! -e "$part" ]; then
+if [ ! -e "$part" ]; then
 	echo "Partition $part does not exist"
 	exit 1
 fi
diff --git a/board/eukrea_cpuimx27/env/bin/_update b/board/eukrea_cpuimx27/env/bin/_update
index fb7cbe8..014bce3 100644
--- a/board/eukrea_cpuimx27/env/bin/_update
+++ b/board/eukrea_cpuimx27/env/bin/_update
@@ -5,7 +5,7 @@
 	exit 1
 fi
 
-if [ \! -e "$part" ]; then
+if [ ! -e "$part" ]; then
 	echo "Partition $part does not exist"
 	exit 1
 fi
diff --git a/board/freescale-mx25-3-stack/env/bin/_update b/board/freescale-mx25-3-stack/env/bin/_update
index fb7cbe8..014bce3 100644
--- a/board/freescale-mx25-3-stack/env/bin/_update
+++ b/board/freescale-mx25-3-stack/env/bin/_update
@@ -5,7 +5,7 @@
 	exit 1
 fi
 
-if [ \! -e "$part" ]; then
+if [ ! -e "$part" ]; then
 	echo "Partition $part does not exist"
 	exit 1
 fi
diff --git a/board/freescale-mx35-3-stack/env/bin/_update b/board/freescale-mx35-3-stack/env/bin/_update
index 4f0839f..ddd6b84 100644
--- a/board/freescale-mx35-3-stack/env/bin/_update
+++ b/board/freescale-mx35-3-stack/env/bin/_update
@@ -5,7 +5,7 @@
 	exit 1
 fi
 
-if [ \! -e "$part" ]; then
+if [ ! -e "$part" ]; then
 	echo "Partition $part does not exist"
 	exit 1
 fi
diff --git a/board/imx27ads/env/bin/_update b/board/imx27ads/env/bin/_update
index fb7cbe8..014bce3 100644
--- a/board/imx27ads/env/bin/_update
+++ b/board/imx27ads/env/bin/_update
@@ -5,7 +5,7 @@
 	exit 1
 fi
 
-if [ \! -e "$part" ]; then
+if [ ! -e "$part" ]; then
 	echo "Partition $part does not exist"
 	exit 1
 fi
diff --git a/board/ipe337/env/bin/_update b/board/ipe337/env/bin/_update
index 124e285..5419ece 100644
--- a/board/ipe337/env/bin/_update
+++ b/board/ipe337/env/bin/_update
@@ -9,7 +9,7 @@
 	exit 1
 fi
 
-if [ \! -e "$part" ]; then
+if [ ! -e "$part" ]; then
 	echo "Partition $part does not exist"
 	exit 1
 fi
diff --git a/board/kp_ukd_r1_num/env/bin/_update b/board/kp_ukd_r1_num/env/bin/_update
index fb7cbe8..014bce3 100644
--- a/board/kp_ukd_r1_num/env/bin/_update
+++ b/board/kp_ukd_r1_num/env/bin/_update
@@ -5,7 +5,7 @@
 	exit 1
 fi
 
-if [ \! -e "$part" ]; then
+if [ ! -e "$part" ]; then
 	echo "Partition $part does not exist"
 	exit 1
 fi
diff --git a/board/mmccpu/env/bin/_update b/board/mmccpu/env/bin/_update
index fb7cbe8..014bce3 100644
--- a/board/mmccpu/env/bin/_update
+++ b/board/mmccpu/env/bin/_update
@@ -5,7 +5,7 @@
 	exit 1
 fi
 
-if [ \! -e "$part" ]; then
+if [ ! -e "$part" ]; then
 	echo "Partition $part does not exist"
 	exit 1
 fi
diff --git a/board/pcm037/env/bin/_update b/board/pcm037/env/bin/_update
index fb7cbe8..014bce3 100644
--- a/board/pcm037/env/bin/_update
+++ b/board/pcm037/env/bin/_update
@@ -5,7 +5,7 @@
 	exit 1
 fi
 
-if [ \! -e "$part" ]; then
+if [ ! -e "$part" ]; then
 	echo "Partition $part does not exist"
 	exit 1
 fi
diff --git a/board/pcm038/env/bin/_update b/board/pcm038/env/bin/_update
index fb7cbe8..014bce3 100644
--- a/board/pcm038/env/bin/_update
+++ b/board/pcm038/env/bin/_update
@@ -5,7 +5,7 @@
 	exit 1
 fi
 
-if [ \! -e "$part" ]; then
+if [ ! -e "$part" ]; then
 	echo "Partition $part does not exist"
 	exit 1
 fi
diff --git a/board/pcm043/env/bin/_update b/board/pcm043/env/bin/_update
index fb7cbe8..014bce3 100644
--- a/board/pcm043/env/bin/_update
+++ b/board/pcm043/env/bin/_update
@@ -5,7 +5,7 @@
 	exit 1
 fi
 
-if [ \! -e "$part" ]; then
+if [ ! -e "$part" ]; then
 	echo "Partition $part does not exist"
 	exit 1
 fi
diff --git a/board/phycard-i.MX27/env/bin/_update b/board/phycard-i.MX27/env/bin/_update
index fb7cbe8..014bce3 100644
--- a/board/phycard-i.MX27/env/bin/_update
+++ b/board/phycard-i.MX27/env/bin/_update
@@ -5,7 +5,7 @@
 	exit 1
 fi
 
-if [ \! -e "$part" ]; then
+if [ ! -e "$part" ]; then
 	echo "Partition $part does not exist"
 	exit 1
 fi
diff --git a/board/phycore_mcf54xx/env/bin/_update b/board/phycore_mcf54xx/env/bin/_update
index fb7cbe8..014bce3 100644
--- a/board/phycore_mcf54xx/env/bin/_update
+++ b/board/phycore_mcf54xx/env/bin/_update
@@ -5,7 +5,7 @@
 	exit 1
 fi
 
-if [ \! -e "$part" ]; then
+if [ ! -e "$part" ]; then
 	echo "Partition $part does not exist"
 	exit 1
 fi
diff --git a/board/pm9263/env/bin/_update b/board/pm9263/env/bin/_update
index fb7cbe8..014bce3 100644
--- a/board/pm9263/env/bin/_update
+++ b/board/pm9263/env/bin/_update
@@ -5,7 +5,7 @@
 	exit 1
 fi
 
-if [ \! -e "$part" ]; then
+if [ ! -e "$part" ]; then
 	echo "Partition $part does not exist"
 	exit 1
 fi