diff --git a/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/utils/FHIRPathEngine.java b/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/utils/FHIRPathEngine.java
index f857c5ef5..23432ce6d 100644
--- a/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/utils/FHIRPathEngine.java
+++ b/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/utils/FHIRPathEngine.java
@@ -4711,7 +4711,7 @@ public class FHIRPathEngine {
       if (Utilities.noString(st)) {
         result.add(new BooleanType(false).noExtensions());
       } else {
-        boolean ok = st.matches(sw);
+        boolean ok = st.matches("(?s)" + sw);
         result.add(new BooleanType(ok).noExtensions());
       }
     } else {