diff --git a/fpga/tests/plot_edgedetect.py b/fpga/tests/plot_edgedetect.py
index 4e244ebc3..3249de6c2 100755
--- a/fpga/tests/plot_edgedetect.py
+++ b/fpga/tests/plot_edgedetect.py
@@ -11,8 +11,8 @@ import matplotlib.pyplot as plt
 import sys
 
 if len(sys.argv) != 2:
-	print "Usage: %s <basename>" % sys.argv[0]
-	sys.exit(1)
+    print "Usage: %s <basename>" % sys.argv[0]
+    sys.exit(1)
 
 BASENAME = sys.argv[1]
 
diff --git a/proxmark3.sh b/proxmark3.sh
index e58749b2e..34691b95a 100755
--- a/proxmark3.sh
+++ b/proxmark3.sh
@@ -1,26 +1,26 @@
 #!/bin/bash
 
 function wait4proxmark_Linux {
-	echo >&2 "Waiting for Proxmark to appear..."
-	while [ ! -c /dev/ttyACM? -a ! -L /dev/pm3-? ]; do
-		sleep .1
-	done
-	local PM3=`ls -1 /dev/pm3-? /dev/ttyACM? 2>/dev/null | head -1`
-	echo >&2 -e "Found proxmark on ${PM3}\n"
-	echo $PM3
+    echo >&2 "Waiting for Proxmark to appear..."
+    while [ ! -c /dev/ttyACM? -a ! -L /dev/pm3-? ]; do
+        sleep .1
+    done
+    local PM3=`ls -1 /dev/pm3-? /dev/ttyACM? 2>/dev/null | head -1`
+    echo >&2 -e "Found proxmark on ${PM3}\n"
+    echo $PM3
 }
 
 function wait4proxmark_macOS {
-	echo >&2 "Waiting for Proxmark to appear..."
-	while true; do
-		PM3=$(ls /dev/pm3-* /dev/cu.usbmodem* 2>/dev/null | head -1)
-		if [[ $PM3 != "" ]]; then
-			#echo >&2 -e "Found proxmark on $(ls /dev/pm3-* /dev/cu.usbmodem* 2>/dev/null | head -1)\n"
-			break
-		fi
-		sleep .1
-	done
-	echo $PM3
+    echo >&2 "Waiting for Proxmark to appear..."
+    while true; do
+        PM3=$(ls /dev/pm3-* /dev/cu.usbmodem* 2>/dev/null | head -1)
+        if [[ $PM3 != "" ]]; then
+            #echo >&2 -e "Found proxmark on $(ls /dev/pm3-* /dev/cu.usbmodem* 2>/dev/null | head -1)\n"
+            break
+        fi
+        sleep .1
+    done
+    echo $PM3
 }
 
 # start proxmark with first detected interface
diff --git a/update.sh b/update.sh
index 3546cc3d1..fe5f0dd95 100755
--- a/update.sh
+++ b/update.sh
@@ -1,26 +1,26 @@
 #!/bin/bash
 
 function wait4proxmark_Linux {
-	echo >&2 "Waiting for Proxmark to appear..."
-	while [ ! -c /dev/ttyACM? -a ! -L /dev/pm3-? ]; do
-		sleep .1
-	done
-	local PM3=`ls -1 /dev/pm3-? /dev/ttyACM? 2>/dev/null | head -1`
-	echo >&2 -e "Found proxmark on ${PM3}\n"
-	echo $PM3
+    echo >&2 "Waiting for Proxmark to appear..."
+    while [ ! -c /dev/ttyACM? -a ! -L /dev/pm3-? ]; do
+        sleep .1
+    done
+    local PM3=`ls -1 /dev/pm3-? /dev/ttyACM? 2>/dev/null | head -1`
+    echo >&2 -e "Found proxmark on ${PM3}\n"
+    echo $PM3
 }
 
 function wait4proxmark_macOS {
-	echo >&2 "Waiting for Proxmark to appear..."
-	while true; do
-		PM3=$(ls /dev/pm3-* /dev/cu.usbmodem* 2>/dev/null | head -1)
-		if [[ $PM3 != "" ]]; then
-			#echo >&2 -e "Found proxmark on $(ls /dev/pm3-* /dev/cu.usbmodem* 2>/dev/null | head -1)\n"
-			break
-		fi
-		sleep .1
-	done
-	echo $PM3
+    echo >&2 "Waiting for Proxmark to appear..."
+    while true; do
+        PM3=$(ls /dev/pm3-* /dev/cu.usbmodem* 2>/dev/null | head -1)
+        if [[ $PM3 != "" ]]; then
+            #echo >&2 -e "Found proxmark on $(ls /dev/pm3-* /dev/cu.usbmodem* 2>/dev/null | head -1)\n"
+            break
+        fi
+        sleep .1
+    done
+    echo $PM3
 }
 
 # Detect OS and flash bootroom & system image