diff --git a/tests/runtests.pl b/tests/runtests.pl
index 67e42b77e4..71644ad18e 100755
--- a/tests/runtests.pl
+++ b/tests/runtests.pl
@@ -3128,45 +3128,45 @@ sub checksystem {
                 $has_win32 = 1;
                 $has_mingw = 1 if ($curl =~ /-pc-mingw32/);
             }
-           if ($libcurl =~ /(winssl|schannel)/i) {
+           if ($libcurl =~ /\s(winssl|schannel)\b/i) {
                $has_schannel=1;
                $has_sslpinning=1;
            }
-           elsif ($libcurl =~ /openssl/i) {
+           elsif ($libcurl =~ /\sopenssl\b/i) {
                $has_openssl=1;
                $has_sslpinning=1;
            }
-           elsif ($libcurl =~ /gnutls/i) {
+           elsif ($libcurl =~ /\sgnutls\b/i) {
                $has_gnutls=1;
                $has_sslpinning=1;
            }
-           elsif ($libcurl =~ /rustls-ffi/i) {
+           elsif ($libcurl =~ /\srustls-ffi\b/i) {
                $has_rustls=1;
            }
-           elsif ($libcurl =~ /nss/i) {
+           elsif ($libcurl =~ /\snss\b/i) {
                $has_nss=1;
                $has_sslpinning=1;
            }
-           elsif ($libcurl =~ /wolfssl/i) {
+           elsif ($libcurl =~ /\swolfssl\b/i) {
                $has_wolfssl=1;
                $has_sslpinning=1;
            }
-           elsif ($libcurl =~ /bearssl/i) {
+           elsif ($libcurl =~ /\sbearssl\b/i) {
                $has_bearssl=1;
            }
-           elsif ($libcurl =~ /securetransport/i) {
+           elsif ($libcurl =~ /\ssecuretransport\b/i) {
                $has_sectransp=1;
                $has_sslpinning=1;
            }
-           elsif ($libcurl =~ /BoringSSL/i) {
+           elsif ($libcurl =~ /\sBoringSSL\b/i) {
                $has_boringssl=1;
                $has_sslpinning=1;
            }
-           elsif ($libcurl =~ /libressl/i) {
+           elsif ($libcurl =~ /\slibressl\b/i) {
                $has_libressl=1;
                $has_sslpinning=1;
            }
-           elsif ($libcurl =~ /mbedTLS/i) {
+           elsif ($libcurl =~ /\smbedTLS\b/i) {
                $has_mbedtls=1;
                $has_sslpinning=1;
            }