diff --git a/agent/systemd.go b/agent/systemd.go
index 3e37fef7..25e20a22 100644
--- a/agent/systemd.go
+++ b/agent/systemd.go
@@ -301,7 +301,7 @@ func getServicePatterns() []string {
 			if pattern == "" {
 				continue
 			}
-			if !strings.HasSuffix(pattern, ".service") {
+			if !strings.HasSuffix(pattern, "timer") && !strings.HasSuffix(pattern, ".service") {
 				pattern += ".service"
 			}
 			patterns = append(patterns, pattern)
diff --git a/agent/systemd_test.go b/agent/systemd_test.go
index 8d726370..685f9ac7 100644
--- a/agent/systemd_test.go
+++ b/agent/systemd_test.go
@@ -156,6 +156,13 @@ func TestGetServicePatterns(t *testing.T) {
 			expected:       []string{"*nginx*.service", "*apache*.service"},
 			cleanupEnvVars: true,
 		},
+		{
+			name:           "opt into timer monitoring",
+			prefixedEnv:    "nginx.service,docker,apache.timer",
+			unprefixedEnv:  "",
+			expected:       []string{"nginx.service", "docker.service", "apache.timer"},
+			cleanupEnvVars: true,
+		},
 	}
 
 	for _, tt := range tests {