diff --git a/plugins/gpu/nvidia_gpu_ b/plugins/gpu/nvidia_gpu_
index faeac130..7238e43f 100755
--- a/plugins/gpu/nvidia_gpu_
+++ b/plugins/gpu/nvidia_gpu_
@@ -119,11 +119,11 @@ if [ "$1" = "config" ]; then
 			nGpusCounter=0
 			while [ $nGpusCounter -lt $nGpus ]
 			do
-				gpuName=$(echo "$nGpusOutput" | sed -n $(( $nGpusCounter + 1 ))p | cut -d \( -f 1)
+				gpuName=$(echo "$nGpusOutput" | sed -n $((nGpusCounter+1))p | cut -d \( -f 1)
 				echo "temp${nGpusCounter}.warning ${warning:-75}"
 				echo "temp${nGpusCounter}.critical ${critical:-95}"
 				echo "temp${nGpusCounter}.info Temperature information for $gpuName"
-				: $(( nGpusCounter = $nGpusCounter + 1 ))
+				: $((nGpusCounter=nGpusCounter+1))
 			done 
 			;;
 		mem)
@@ -133,11 +133,11 @@ if [ "$1" = "config" ]; then
 			nGpusCounter=0
 			while [ $nGpusCounter -lt $nGpus ]
 			do
-				gpuName=$(echo "$nGpusOutput" | sed -n $(( $nGpusCounter + 1 ))p | cut -d \( -f 1)
+				gpuName=$(echo "$nGpusOutput" | sed -n $((nGpusCounter+1))p | cut -d \( -f 1)
 				echo "mem${nGpusCounter}.info Memory information for $gpuName"
-				gpuMem=$(echo "$gpusTotalMemOutput"| sed -n $(( $nGpusCounter + 1 ))p)
+				gpuMem=$(echo "$gpusTotalMemOutput"| sed -n $((nGpusCounter+1))p)
 				gpusTotalMem="${gpusTotalMem}${gpuMem} for GPU ${nGpusCounter}"
-				: $(( nGpusCounter = $nGpusCounter + 1 ))
+				: $((nGpusCounter=nGpusCounter+1))
 				if [ $nGpusCounter -lt $nGpus ]; then
 					gpusTotalMem="${gpusTotalMem}, "
 				fi
@@ -158,9 +158,9 @@ if [ "$1" = "config" ]; then
 			nGpusCounter=0
 			while [ $nGpusCounter -lt $nGpus ]
 			do
-				gpuName=$(echo "$nGpusOutput" | sed -n $(( $nGpusCounter + 1 ))p | cut -d \( -f 1)
+				gpuName=$(echo "$nGpusOutput" | sed -n $((nGpusCounter+1))p | cut -d \( -f 1)
 				echo "fan${nGpusCounter}.info Fan information for $gpuName"
-				: $(( nGpusCounter = $nGpusCounter + 1 ))
+				: $((nGpusCounter=nGpusCounter+1))
 				done 
 			;;
 		power)
@@ -171,9 +171,9 @@ if [ "$1" = "config" ]; then
 			nGpusCounter=0
 			while [ $nGpusCounter -lt $nGpus ]
 			do
-				gpuName=$(echo "$nGpusOutput" | sed -n $(( $nGpusCounter + 1 ))p | cut -d \( -f 1)
+				gpuName=$(echo "$nGpusOutput" | sed -n $((nGpusCounter+1))p | cut -d \( -f 1)
 				echo "power${nGpusCounter}.info power consumption of $gpuName"
-				: $(( nGpusCounter = $nGpusCounter + 1 ))
+				: $((nGpusCounter=nGpusCounter+1))
 				done
 			;;
 		*)
@@ -187,9 +187,9 @@ if [ "$1" = "config" ]; then
 	nGpusCounter=0
 	while [ $nGpusCounter -lt $nGpus ]
 	do
-		gpuName=$(echo "$nGpusOutput" | sed -n $(( $nGpusCounter + 1 ))p | cut -d \( -f 1)
+		gpuName=$(echo "$nGpusOutput" | sed -n $((nGpusCounter+1))p | cut -d \( -f 1)
 		echo "${name}${nGpusCounter}.label $gpuName"
-		: $(( nGpusCounter = $nGpusCounter + 1 ))
+		: $((nGpusCounter=nGpusCounter+1))
 		#print_warning $name
 		#print_critical $name
 	done
@@ -209,11 +209,11 @@ case $name in
 		nGpusCounter=0
 		while [ $nGpusCounter -lt $nGpus ]
 		do
-			totalMemGpu=$(echo "$totalMemGpus" | sed -n $(( $nGpusCounter + 1 ))p)
-			usedMemGpu=$(echo "$usedMemGpus" | sed -n $(( $nGpusCounter + 1 ))p)
-			percentMemUsed=$(( $usedMemGpu * 100 / $totalMemGpu ))
+			totalMemGpu=$(echo "$totalMemGpus" | sed -n $((nGpusCounter+1))p)
+			usedMemGpu=$(echo "$usedMemGpus" | sed -n $((nGpusCounter+1))p)
+			percentMemUsed=$((usedMemGpu*100/totalMemGpu))
 			valueGpus="${valueGpus}${percentMemUsed}"$'\n'
-			: $(( nGpusCounter = $nGpusCounter + 1 ))
+			: $((nGpusCounter=nGpusCounter+1))
 		done
 		;;
 	fan)
@@ -234,9 +234,9 @@ case $name in
 nGpusCounter=0
 while [ $nGpusCounter -lt $nGpus ]
 do
-	value=$(echo "$valueGpus" | sed -n $(( $nGpusCounter + 1 ))p)
+	value=$(echo "$valueGpus" | sed -n $((nGpusCounter+1))p)
 	echo "${name}${nGpusCounter}.value $value"
-	: $(( nGpusCounter = $nGpusCounter + 1 ))
+	: $((nGpusCounter=nGpusCounter+1))
 done