diff --git a/app/src/main/java/com/verygoodsecurity/demoapp/activity_case/VGSCollectActivity.kt b/app/src/main/java/com/verygoodsecurity/demoapp/activity_case/VGSCollectActivity.kt
index 2dd347772..30bf2266e 100644
--- a/app/src/main/java/com/verygoodsecurity/demoapp/activity_case/VGSCollectActivity.kt
+++ b/app/src/main/java/com/verygoodsecurity/demoapp/activity_case/VGSCollectActivity.kt
@@ -223,8 +223,10 @@ class VGSCollectActivity: AppCompatActivity(), VgsCollectResponseListener, View.
             .setHostname("collect-android-testing.verygoodsecurity.io/test")
             .create()
 
-        val cacheSize = 10 * 1024 * 1024 // 10MB
-        vgsForm.getFileProvider().resize(cacheSize)
+        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP) {
+            val cacheSize = 10 * 1024 * 1024 // 10MB
+            vgsForm.getFileProvider().resize(cacheSize)
+        }
     }
 
     override fun onCreateOptionsMenu(menu: Menu): Boolean {
diff --git a/vgscollect/src/main/java/com/verygoodsecurity/vgscollect/core/storage/content/file/TemporaryFileStorage.kt b/vgscollect/src/main/java/com/verygoodsecurity/vgscollect/core/storage/content/file/TemporaryFileStorage.kt
index 7fbedbb7a..ddcd32b72 100644
--- a/vgscollect/src/main/java/com/verygoodsecurity/vgscollect/core/storage/content/file/TemporaryFileStorage.kt
+++ b/vgscollect/src/main/java/com/verygoodsecurity/vgscollect/core/storage/content/file/TemporaryFileStorage.kt
@@ -4,8 +4,10 @@ import android.app.Activity
 import android.content.Context
 import android.content.Intent
 import android.net.Uri
+import android.os.Build
 import android.os.Bundle
 import android.util.LruCache
+import androidx.annotation.RequiresApi
 import androidx.annotation.VisibleForTesting
 import com.verygoodsecurity.vgscollect.app.FilePickerActivity
 import com.verygoodsecurity.vgscollect.core.model.network.VGSError
@@ -38,6 +40,7 @@ internal class TemporaryFileStorage(
         memoryCache.evictAll()
     }
 
+    @RequiresApi(Build.VERSION_CODES.LOLLIPOP)
     override fun resize(size: Int) {
         memoryCache.resize(size)
     }
diff --git a/vgscollect/src/main/java/com/verygoodsecurity/vgscollect/core/storage/content/file/VGSFileProvider.kt b/vgscollect/src/main/java/com/verygoodsecurity/vgscollect/core/storage/content/file/VGSFileProvider.kt
index 84658d7a7..a29250328 100644
--- a/vgscollect/src/main/java/com/verygoodsecurity/vgscollect/core/storage/content/file/VGSFileProvider.kt
+++ b/vgscollect/src/main/java/com/verygoodsecurity/vgscollect/core/storage/content/file/VGSFileProvider.kt
@@ -1,5 +1,7 @@
 package com.verygoodsecurity.vgscollect.core.storage.content.file
 
+import android.os.Build
+import androidx.annotation.RequiresApi
 import com.verygoodsecurity.vgscollect.core.model.state.FileState
 
 /**
@@ -13,6 +15,7 @@ interface VGSFileProvider {
      *
      * @param cacheSize The new maximum size.
      */
+    @RequiresApi(Build.VERSION_CODES.LOLLIPOP)
     fun resize(cacheSize: Int)
 
     /**