diff --git a/headless-services/commons/commons-language-server/src/main/java/org/springframework/ide/vscode/commons/languageserver/config/LanguageServerProperties.java b/headless-services/commons/commons-language-server/src/main/java/org/springframework/ide/vscode/commons/languageserver/config/LanguageServerProperties.java
index ab3846f0c..0d7645f98 100644
--- a/headless-services/commons/commons-language-server/src/main/java/org/springframework/ide/vscode/commons/languageserver/config/LanguageServerProperties.java
+++ b/headless-services/commons/commons-language-server/src/main/java/org/springframework/ide/vscode/commons/languageserver/config/LanguageServerProperties.java
@@ -25,6 +25,11 @@ public class LanguageServerProperties {
 	 */
 	private String extensionId;
 
+	/**
+	 * List of characters that trigger completions.
+	 */
+	private String completionTriggerCharacters;
+
 	public boolean isStandalone() {
 		return standalone;
 	}
@@ -49,4 +54,12 @@ public class LanguageServerProperties {
 		this.extensionId = extensionId;
 	}
 
+	public String getCompletionTriggerCharacters() {
+		return completionTriggerCharacters;
+	}
+
+	public void setCompletionTriggerCharacters(String completionTriggerCharacters) {
+		this.completionTriggerCharacters = completionTriggerCharacters;
+	}
+
 }
diff --git a/headless-services/commons/commons-language-server/src/main/java/org/springframework/ide/vscode/commons/languageserver/util/SimpleLanguageServer.java b/headless-services/commons/commons-language-server/src/main/java/org/springframework/ide/vscode/commons/languageserver/util/SimpleLanguageServer.java
index 85c548a7e..b329e6e02 100644
--- a/headless-services/commons/commons-language-server/src/main/java/org/springframework/ide/vscode/commons/languageserver/util/SimpleLanguageServer.java
+++ b/headless-services/commons/commons-language-server/src/main/java/org/springframework/ide/vscode/commons/languageserver/util/SimpleLanguageServer.java
@@ -14,6 +14,7 @@ import java.lang.management.ManagementFactory;
 import java.net.URI;
 import java.nio.file.Paths;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.HashMap;
@@ -154,6 +155,8 @@ public final class SimpleLanguageServer implements Sts4LanguageServer, LanguageC
 
 	private Optional<CompletionFilter> completionFilter = Optional.empty();
 
+	private String completionTriggerCharacters = null;
+
 	@Override
 	public void connect(LanguageClient _client) {
 		this.client = (STS4LanguageClient) _client;
@@ -369,6 +372,13 @@ public final class SimpleLanguageServer implements Sts4LanguageServer, LanguageC
 
 		CompletionOptions completionProvider = new CompletionOptions();
 		completionProvider.setResolveProvider(hasLazyCompletionResolver());
+		if (this.completionTriggerCharacters!=null) {
+			String[] chars = new String[this.completionTriggerCharacters.length()];
+			for (int i = 0; i < chars.length; i++) {
+				chars[i] = this.completionTriggerCharacters.substring(i, i+1);
+			}
+			completionProvider.setTriggerCharacters(ImmutableList.copyOf(chars));
+		}
 		c.setCompletionProvider(completionProvider);
 
 		if (hasQuickFixes()) {
@@ -710,4 +720,12 @@ public final class SimpleLanguageServer implements Sts4LanguageServer, LanguageC
 	public void setCompletionFilter(Optional<CompletionFilter> completionFilter) {
 		this.completionFilter = completionFilter;
 	}
+
+	public String getCompletionTriggerCharacters() {
+		return completionTriggerCharacters;
+	}
+
+	public void setCompletionTriggerCharacters(String completionTriggerCharacters) {
+		this.completionTriggerCharacters = completionTriggerCharacters;
+	}
 }
diff --git a/headless-services/commons/language-server-starter/src/main/java/org/springframework/ide/vscode/languageserver/starter/LanguageServerAutoConf.java b/headless-services/commons/language-server-starter/src/main/java/org/springframework/ide/vscode/languageserver/starter/LanguageServerAutoConf.java
index 3790b62bd..f5449f0d6 100644
--- a/headless-services/commons/language-server-starter/src/main/java/org/springframework/ide/vscode/languageserver/starter/LanguageServerAutoConf.java
+++ b/headless-services/commons/language-server-starter/src/main/java/org/springframework/ide/vscode/languageserver/starter/LanguageServerAutoConf.java
@@ -47,6 +47,7 @@ public class LanguageServerAutoConf {
 			Optional<CompletionFilter> completionFilter
 	) throws Exception {
 		SimpleLanguageServer server = new SimpleLanguageServer(props.getExtensionId());
+		server.setCompletionTriggerCharacters(props.getCompletionTriggerCharacters());
 		server.setCompletionFilter(completionFilter);
 		severities.ifPresent(server::setDiagnosticSeverityProvider);
 		return server;
diff --git a/headless-services/spring-boot-language-server/src/main/resources/application.yml b/headless-services/spring-boot-language-server/src/main/resources/application.yml
index 6c3ea8a07..0e6c8f7e2 100644
--- a/headless-services/spring-boot-language-server/src/main/resources/application.yml
+++ b/headless-services/spring-boot-language-server/src/main/resources/application.yml
@@ -1,2 +1,3 @@
 languageserver:
-  extension-id: vscode-spring-boot
\ No newline at end of file
+  extension-id: vscode-spring-boot
+  completion-trigger-characters: abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ.
\ No newline at end of file