diff --git a/src/apps/debugger/debug_info/DwarfImageDebugInfo.cpp b/src/apps/debugger/debug_info/DwarfImageDebugInfo.cpp
index 5f2abe8806..4bb44425f7 100644
--- a/src/apps/debugger/debug_info/DwarfImageDebugInfo.cpp
+++ b/src/apps/debugger/debug_info/DwarfImageDebugInfo.cpp
@@ -229,8 +229,8 @@ printf("  %ld compilation units\n", fFile->CountCompilationUnits());
 			// get the source location
 			const char* directoryPath = NULL;
 			const char* fileName = NULL;
-			uint32 line = -1;
-			uint32 column = -1;
+			uint32 line = ~0U;
+			uint32 column = ~0U;
 			DwarfUtils::GetDeclarationLocation(fFile, subprogramEntry,
 				directoryPath, fileName, line, column);