diff --git a/Analyser/Static/Acorn/StaticAnalyser.cpp b/Analyser/Static/Acorn/StaticAnalyser.cpp
index cff55c8a1..3b2eed51e 100644
--- a/Analyser/Static/Acorn/StaticAnalyser.cpp
+++ b/Analyser/Static/Acorn/StaticAnalyser.cpp
@@ -59,7 +59,7 @@ static std::vector<std::shared_ptr<Storage::Cartridge::Cartridge>>
 void Analyser::Static::Acorn::AddTargets(const Media &media, std::vector<std::unique_ptr<Target>> &destination) {
 	std::unique_ptr<Target> target(new Target);
 	target->machine = Machine::Electron;
-	target->confidence = 1.0; // TODO: a proper estimation
+	target->confidence = 0.5; // TODO: a proper estimation
 	target->acorn.has_dfs = false;
 	target->acorn.has_adfs = false;
 	target->acorn.should_shift_restart = false;
diff --git a/Analyser/Static/AmstradCPC/StaticAnalyser.cpp b/Analyser/Static/AmstradCPC/StaticAnalyser.cpp
index e048af1c4..19438df8d 100644
--- a/Analyser/Static/AmstradCPC/StaticAnalyser.cpp
+++ b/Analyser/Static/AmstradCPC/StaticAnalyser.cpp
@@ -180,7 +180,7 @@ static bool CheckBootSector(const std::shared_ptr<Storage::Disk::Disk> &disk, co
 void Analyser::Static::AmstradCPC::AddTargets(const Media &media, std::vector<std::unique_ptr<Target>> &destination) {
 	std::unique_ptr<Target> target(new Target);
 	target->machine = Machine::AmstradCPC;
-	target->confidence = 1.0;
+	target->confidence = 0.5;
 	target->media.disks = media.disks;
 	target->media.tapes = media.tapes;
 	target->media.cartridges = media.cartridges;
diff --git a/Analyser/Static/Atari/StaticAnalyser.cpp b/Analyser/Static/Atari/StaticAnalyser.cpp
index e3691e30a..423bb4afe 100644
--- a/Analyser/Static/Atari/StaticAnalyser.cpp
+++ b/Analyser/Static/Atari/StaticAnalyser.cpp
@@ -182,7 +182,7 @@ void Analyser::Static::Atari::AddTargets(const Media &media, std::vector<std::un
 	// TODO: sanity checking; is this image really for an Atari 2600.
 	std::unique_ptr<Target> target(new Target);
 	target->machine = Machine::Atari2600;
-	target->confidence = 1.0;
+	target->confidence = 0.5;
 	target->media.cartridges = media.cartridges;
 	target->atari.paging_model = Atari2600PagingModel::None;
 	target->atari.uses_superchip = false;
diff --git a/Analyser/Static/Commodore/StaticAnalyser.cpp b/Analyser/Static/Commodore/StaticAnalyser.cpp
index 055404f9d..872e0e3b9 100644
--- a/Analyser/Static/Commodore/StaticAnalyser.cpp
+++ b/Analyser/Static/Commodore/StaticAnalyser.cpp
@@ -41,7 +41,7 @@ static std::vector<std::shared_ptr<Storage::Cartridge::Cartridge>>
 void Analyser::Static::Commodore::AddTargets(const Media &media, std::vector<std::unique_ptr<Target>> &destination) {
 	std::unique_ptr<Target> target(new Target);
 	target->machine = Machine::Vic20;	// TODO: machine estimation
-	target->confidence = 1.0; // TODO: a proper estimation
+	target->confidence = 0.5; // TODO: a proper estimation
 
 	int device = 0;
 	std::vector<File> files;
diff --git a/Analyser/Static/MSX/StaticAnalyser.cpp b/Analyser/Static/MSX/StaticAnalyser.cpp
index de0d0ef76..26351bf2b 100644
--- a/Analyser/Static/MSX/StaticAnalyser.cpp
+++ b/Analyser/Static/MSX/StaticAnalyser.cpp
@@ -286,7 +286,7 @@ void Analyser::Static::MSX::AddTargets(const Media &media, std::vector<std::uniq
 
 	if(!target->media.empty()) {
 		target->machine = Machine::MSX;
-		target->confidence = 1.0;
+		target->confidence = 0.5;
 		destination.push_back(std::move(target));
 	}
 }
diff --git a/Analyser/Static/Oric/StaticAnalyser.cpp b/Analyser/Static/Oric/StaticAnalyser.cpp
index 67c3c867e..364ba8bbf 100644
--- a/Analyser/Static/Oric/StaticAnalyser.cpp
+++ b/Analyser/Static/Oric/StaticAnalyser.cpp
@@ -76,7 +76,7 @@ static int Basic11Score(const Analyser::Static::MOS6502::Disassembly &disassembl
 void Analyser::Static::Oric::AddTargets(const Media &media, std::vector<std::unique_ptr<Target>> &destination) {
 	std::unique_ptr<Target> target(new Target);
 	target->machine = Machine::Oric;
-	target->confidence = 1.0;
+	target->confidence = 0.5;
 
 	int basic10_votes = 0;
 	int basic11_votes = 0;