diff --git a/src/main.cpp b/src/main.cpp
index 537016343..4e6fc678f 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -5697,9 +5697,9 @@ bool CheckDiskSpace(uint64_t nAdditionalBytes)
     if(fDebug) {
         fprintf(stderr,"Free bytes on disk: %lu\n", nFreeBytesAvailable);
     }
-    // Check for nMinDiskSpace bytes (currently 50MB)
+    // Check for nMinDiskSpace bytes (defined in main.h)
     if (nFreeBytesAvailable < nMinDiskSpace + nAdditionalBytes)
-        return AbortNode("Disk space is low!", _("Error: Disk space is low!"));
+        return AbortNode("Disk space is low!!!", _("Error: Disk space is low!!!"));
 
     return true;
 }
diff --git a/src/main.h b/src/main.h
index 676a069cd..f2e5ad38d 100644
--- a/src/main.h
+++ b/src/main.h
@@ -172,7 +172,7 @@ extern int64_t nMaxTipAge;
 extern CBlockIndex *pindexBestHeader;
 
 /** Minimum disk space required - used in CheckDiskSpace() */
-static const uint64_t nMinDiskSpace = 52428800;
+static const uint64_t nMinDiskSpace = 1073741824; // 1GB
 
 /** Pruning-related variables and constants */
 /** True if any block files have ever been pruned. */