diff --git a/src/main/java/org/springframework/data/repository/config/RepositoryConfigurationExtension.java b/src/main/java/org/springframework/data/repository/config/RepositoryConfigurationExtension.java
index 4efd38e09..07aacda25 100644
--- a/src/main/java/org/springframework/data/repository/config/RepositoryConfigurationExtension.java
+++ b/src/main/java/org/springframework/data/repository/config/RepositoryConfigurationExtension.java
@@ -16,6 +16,7 @@
 package org.springframework.data.repository.config;
 
 import java.util.Collection;
+import java.util.Locale;
 
 import org.springframework.beans.factory.config.BeanDefinition;
 import org.springframework.beans.factory.support.BeanDefinitionBuilder;
@@ -31,6 +32,19 @@ import org.springframework.core.io.ResourceLoader;
  */
 public interface RepositoryConfigurationExtension {
 
+	/**
+	 * A {@link String} uniquely identifying the module within all Spring Data modules. Must not contain any spaces.
+	 *
+	 * @return will never be {@literal null}.
+	 * @since 3.0
+	 */
+	default String getModuleIdentifier() {
+
+		return getModuleName()
+				.toLowerCase(Locale.ENGLISH)
+				.replace(' ', '-');
+	}
+
 	/**
 	 * Returns the descriptive name of the module.
 	 *
diff --git a/src/main/java/org/springframework/data/repository/config/RepositoryConfigurationExtensionSupport.java b/src/main/java/org/springframework/data/repository/config/RepositoryConfigurationExtensionSupport.java
index 567bbc8db..d89304a6c 100644
--- a/src/main/java/org/springframework/data/repository/config/RepositoryConfigurationExtensionSupport.java
+++ b/src/main/java/org/springframework/data/repository/config/RepositoryConfigurationExtensionSupport.java
@@ -103,7 +103,7 @@ public abstract class RepositoryConfigurationExtensionSupport implements Reposit
 	}
 
 	public String getDefaultNamedQueryLocation() {
-		return String.format("classpath*:META-INF/%s-named-queries.properties", getModulePrefix());
+		return String.format("classpath*:META-INF/%s-named-queries.properties", getModuleIdentifier());
 	}
 
 	public void registerBeansForRoot(BeanDefinitionRegistry registry,
@@ -113,7 +113,11 @@ public abstract class RepositoryConfigurationExtensionSupport implements Reposit
 	 * Returns the prefix of the module to be used to create the default location for Spring Data named queries.
 	 *
 	 * @return must not be {@literal null}.
+	 * @deprecated since 3.0, refer to {@link #getModuleIdentifier()} instead and implement either
+	 *             {@link #getModuleName()} directly or both methods if the default translation from name to identifier as
+	 *             defined in {@link RepositoryConfigurationExtension#getModuleIdentifier()} doesn't suit you.
 	 */
+	@Deprecated
 	protected abstract String getModulePrefix();
 
 	public void postProcess(BeanDefinitionBuilder builder, RepositoryConfigurationSource source) {}