diff --git a/dsf/org.eclipse.cdt.dsf.ui/src/org/eclipse/cdt/dsf/debug/internal/ui/disassembly/DisassemblyPart.java b/dsf/org.eclipse.cdt.dsf.ui/src/org/eclipse/cdt/dsf/debug/internal/ui/disassembly/DisassemblyPart.java
index aeb28f8607c..ebb53ddc17d 100644
--- a/dsf/org.eclipse.cdt.dsf.ui/src/org/eclipse/cdt/dsf/debug/internal/ui/disassembly/DisassemblyPart.java
+++ b/dsf/org.eclipse.cdt.dsf.ui/src/org/eclipse/cdt/dsf/debug/internal/ui/disassembly/DisassemblyPart.java
@@ -2872,7 +2872,7 @@ public abstract class DisassemblyPart extends WorkbenchPart implements IDisassem
 				final IPath location= ((IStorage) sourceElement).getFullPath();
 				if (location != null) {
 					IFile iFile = ResourceLookup.selectFileForLocation(location, null);
-					if (iFile != null) {
+					if (iFile != null && iFile.isAccessible()) {
 						sourceElement = iFile;
 					}
 				}