diff --git a/src/modules/partition/core/PartitionInfo.cpp b/src/modules/partition/core/PartitionInfo.cpp
index c4d239db8..2b0b4fd7a 100644
--- a/src/modules/partition/core/PartitionInfo.cpp
+++ b/src/modules/partition/core/PartitionInfo.cpp
@@ -25,7 +25,7 @@ static const char FORMAT_PROPERTY[] = "_calamares_format";
 static const char FLAGS_PROPERTY[] = "_calamares_flags";
 
 QString
-mountPoint( Partition* partition )
+mountPoint( const Partition* partition )
 {
     return partition->property( MOUNT_POINT_PROPERTY ).toString();
 }
@@ -37,7 +37,7 @@ setMountPoint( Partition* partition, const QString& value )
 }
 
 bool
-format( Partition* partition )
+format( const Partition* partition )
 {
     return partition->property( FORMAT_PROPERTY ).toBool();
 }
diff --git a/src/modules/partition/core/PartitionInfo.h b/src/modules/partition/core/PartitionInfo.h
index 19b66180a..53064abe5 100644
--- a/src/modules/partition/core/PartitionInfo.h
+++ b/src/modules/partition/core/PartitionInfo.h
@@ -33,10 +33,10 @@ class Partition;
 namespace PartitionInfo
 {
 
-QString mountPoint( Partition* partition );
+QString mountPoint( const Partition* partition );
 void setMountPoint( Partition* partition, const QString& value );
 
-bool format( Partition* partition );
+bool format( const Partition* partition );
 void setFormat( Partition* partition, bool value );
 
 PartitionTable::Flags flags( const Partition* partition );