diff --git a/spectre-meltdown-checker.sh b/spectre-meltdown-checker.sh
index f2806b8..c947682 100755
--- a/spectre-meltdown-checker.sh
+++ b/spectre-meltdown-checker.sh
@@ -2695,7 +2695,7 @@ check_CVE_2017_5715_linux()
 					ibrs_fw_enabled=1
 				fi
 				# when IBRS is enabled on 4.15+, we can see it in sysfs
-				if grep -q -e 'IBRS' -e 'Indirect Branch Restricted Speculation' "/sys/devices/system/cpu/vulnerabilities/spectre_v2"; then
+				if grep -q -e '\<IBRS\>' -e 'Indirect Branch Restricted Speculation' "/sys/devices/system/cpu/vulnerabilities/spectre_v2"; then
 					_debug "ibrs: found IBRS in sysfs"
 					[ -z "$ibrs_supported" ] && ibrs_supported='found IBRS in sysfs'
 					[ -z "$ibrs_enabled"   ] && ibrs_enabled=3